Onion Braised Brisket Food

ONION-BRAISED BEEF BRISKET

Steps:

• Pat brisket dry with paper towels and place fat side up on cutting board. Using fork, poke holes in meat through fat layer about 1 inch apart. Season with salt and pepper.
• Using highest sauté or browning function, heat oil in multi- cooker for 5 minutes (or until just smoking). Place 1 brisket half fat side down in multicooker and cook until well browned, about 8 minutes. Flip brisket and cook until well browned on second side, 3 to 5 minutes; transfer to large plate. Repeat with second brisket half; transfer to plate.
• Add onions and ¼ teaspoon salt to fat left in multicooker and cook until onions are softened, 10 to 12 minutes. Stir in garlic, tomato paste, paprika, and cayenne and cook until fragrant, about 1 minute. Stir in broth, wine, bay leaves, and thyme sprigs, scraping up any browned bits. Nestle brisket halves into onion mixture (pieces will overlap), adding any accumulated juices.
• TO PRESSURE COOK: Lock lid in place and close pressure release valve. Select high pressure cook function and cook for 1½ hours. Turn off multicooker and let pressure release naturally for 15 minutes. Quick-release any remaining pressure and let brisket sit, covered, for 1 hour. Carefully remove lid, allowing steam to escape away from you.
• TO SLOW COOK: Lock lid in place and open pressure release valve. Select low slow cook function and cook until beef is tender and knife slips easily in and out of meat, 6½ to 7½ hours. (If using Instant Pot, select high slow cook function and increase cooking range to 10 to 11 hours.) Turn off multicooker and let brisket sit, covered, for 1 hour. Carefully remove lid.
• Transfer brisket to carving board and tent with aluminum foil. Strain braising liquid through fine-mesh strainer into bowl. Discard bay leaves and thyme sprigs. Reserve onions in separate bowl. Let liquid settle, then skim excess fat from surface using large spoon. Return liquid to multicooker and cook using highest sauté or browning function until reduced to about 2 cups, 15 to 20 minutes.
• Slice brisket against grain into ¼-inch-thick slices and place slices on serving dish. Stir reserved onions and vinegar into sauce, and season with salt and pepper to taste. Spoon sauce over brisket and serve.

THE ULTIMATE BRAISED BRISKET

Steps:

• Preheat the oven to 325 degrees F.
• Drizzle brisket liberally with olive oil then season the meat on both sides with salt and pepper.
• Place a large Dutch oven or heavy-based pot over medium-high heat and add a 3-count of olive oil. Place the brisket in the pot and sear on both sides to form a nice brown crust. Remove from pot and set aside before adding carrots, onion and celery. Brown vegetables, then add the garlic, tomatoes, red wine, bay leaf, thyme, rosemary, and parsley. Add the brisket back to the pot, cover and roast in the oven for 3 hours until the brisket is fork tender.
• Remove the brisket to a cutting board and let it rest for 15 minutes. Strain out the vegetables and pour off some of the excess fat, then pour over the brisket.
• Slice brisket across the grain and serve over parsnip puree with roasted red onions and garnish with parsley.

BRAISED BEEF BRISKET WITH ONIONS, MUSHROOMS, AND BALSAMIC

Steps:

• Coat a large roasting pan with olive oil and bring to a high heat. Season the brisket generously with salt. Add the brisket to the pan and brown well on both sides. Remove the brisket from the pan and reserve.
• Preheat the oven to 375 degrees F.
• Lower the heat to medium, ditch the excess oil, and add the bacon and reserved skin to the pan with a little more oil. Cook the bacon, stirring occasionally, until the bacon is crispy and has let out a lot of fat. Add the onions and celery. Season with salt and cook until they are very soft and aromatic, 7 to 8 minutes. Add the garlic and cook for another 2 to 3 minutes. Toss in the mushrooms and cook until they are soft and wilted. Add the balsamic vinegar and reduce it by half. Taste it - it will be very vinegary, but that's ok, don't worry. Season with salt, if needed. Lay the brisket on top of the veggie mix and add the chicken stock to the pan until it just covers the brisket. Add the bay leaves and thyme.
• Cover the pan with foil and roast in the oven. Roast for 1 hour, check the brisket, and turn it over. Add more stock if the liquid level has reduced. Cover the pan again and return it to the oven for another hour. Remove the foil and roast for 30 minutes more.
• Remove the roasting pan from the oven, transfer the brisket to a cutting board, cover with foil, and let rest for 20 minutes.
• Skim off any excess fat from the cooking liquid. If the vegetables are swimming in liquid, reduce the liquid on the stovetop over medium-high heat. You want the sauce to be soupy. Taste the liquid and re-season if needed. Slice the brisket against the grain on the bias. Serve topped with the onion-mushroom mixture and sprinkle with chopped chives.

CLASSIC BRAISED BRISKET

Steps:

• Preheat the oven to 325 degrees F.
• Pat the brisket dry and sprinkle liberally on both sides with salt and pepper. Heat a roasting pan over 2 burners on medium-high heat. Add the oil and heat until hot. Sear the meat, fat-side down, until golden brown, about 10 minutes. Carefully flip and sear on the second side until golden brown, 7 to 8 minutes. Remove the brisket to a platter or baking sheet. Remove all but 2 tablespoons of fat from the pan.
• Add the sweet onions to the pan and cook, scraping the bottom, until just starting to brown, 4 to 5 minutes. Add the wine and cook until reduced by about a third, about 4 minutes. Add the chicken broth, garlic cloves and thyme. Return the brisket and any juices to the pan, cover tightly with foil, transfer to the oven and cook for 3 hours.
• After 3 hours, check to make sure there is still liquid in the pan. If not, add another cup of chicken broth. Re-cover tightly with the foil and cook for another 1 1/2 hours.
• Arrange the pearl onions and leeks around the meat, re-cover with the foil and cook until the meat is very tender, 1 to 1 1/2 more hours. Carefully remove the meat to a platter.
• Stir the honey into the roasting pan, place the pan over 2 burners on medium heat and reduce the liquid by about a third, 6 to 10 minutes. Discard the thyme sprigs. Spoon off any oil from the sauce. Season with salt and pepper. At this point you can serve the brisket or refrigerate overnight (see below).
• Toss the parsley, mint, scallions and shallots with the vinegar in a bowl and season with salt and pepper.
• Spoon some of the sauce with the sweet onions, leeks and pearl onions onto a large platter. Cut the brisket across the grain into thin slices and lay them on top of the sauce. Spoon over more of the sauce and mixed onions and top with the parsley mixture. Serve the remaining sauce and onions on the side
• Make Ahead: You can refrigerating the brisket overnight before serving. Remove the sweet onions, pearl onions and leeks from the sauce and refrigerate separately. The fat will harden as the brisket and sauce chill, making it easy to spoon out. To serve, remove the brisket to a cutting board while cold. Thinly slice and return to the sauce along with the mixed onions. Cover and reheat in a 325 degree F-oven for about 45 minutes.

BRAISED BRISKET

Steps:

• Preheat the oven to 275 degrees F. Mix the fennel seeds, sage, cayenne, 1 tablespoon salt and 1/2 teaspoon black pepper in a small bowl. Rub the spice mixture all over the brisket, pressing it into the meat to make sure it sticks well.
• Mix the beef stock or broth, balsamic vinegar, brown sugar and garlic in a large liquid measuring cup and set aside.
• Heat the olive oil in a Dutch oven or large heavy-bottomed pot with a lid over medium-high heat. Add the brisket fat-side up and cook until golden brown and no longer sticking to the bottom of the pot, 4 to 5 minutes. Flip and cook the other side until it is golden brown and some of the fat has rendered, 2 to 3 minutes. Remove the brisket to a plate and lower the heat to medium.
• Add the onions, carrots and 1 teaspoon salt and cook, stirring occasionally and scraping up any browned bits from the bottom of the pot, until the onions are softened and starting to caramelize, 7 to 8 minutes.
• Add the balsamic mixture and tomatoes to the pot and bring to a boil. Return the brisket to the pan and nestle it into the sauce and vegetables fat-side up. Cover the pot, transfer to the oven and braise until the brisket is tender but not shredding or falling apart, about 3 hours 30 minutes. A fork should easily pierce through the meat.
• Remove from the oven, uncover and let the brisket rest in the pan for 30 minutes. Remove the brisket to a cutting board. Bring the vegetables and sauce to a boil over medium-high heat and cook until slightly thickened, 12 to 15 minutes. Thinly slice the brisket across the grain and place on a platter. Spoon the vegetables and sauce over the top and serve.

BRAISED BRISKET WITH ONIONS & GARLIC

Steps:

• Pre-heat oven to 350 degrees F.
• Place beef brisket, fat side up, in large roasting pan.
• Sprinkle brisket evenly with salt, pepper and garlic; top with onions.
• Roast in oven 1 hour or until onions are lightly browned.
• Add 1 cup hot water.
• Carefully cover pan tightly with aluminum foil.
• Reduce oven to 325F and continue cooking 2 hours or until brisket is tender.
• To make gravy, skim fat from pan juices.
• Add cornstarch mixture to pan juices.
• Cook over medium heat until gravy boils and thickens, stirring constantly.
• Carve brisket across the grain into thin slices; serve with onions and gravy.
• Makes 6 to 8 servings.

ONION-BRAISED BEEF BRISKET(ATK)

Steps:

• Adjust oven rack to lower-middle position; heat oven to 300 degrees. Line 13 by 9-inch baking dish with two 24-inch-long sheets of 18-inch-wide heavy-duty foil, positioning sheets perpendicular to each other and allowing excess foil to extend beyond edges of pan. Pat brisket dry with paper towels. Place brisket fat side up on cutting board; using dinner fork, poke holes in meat through fat layer about 1 inch apart. Season both sides of brisket liberally with salt and pepper.
• Heat 1 teaspoon oil in 12-inch skillet over medium-high heat until oil just begins to smoke. Place brisket fat side up in skillet (brisket may climb up sides of skillet); weight brisket with heavy Dutch oven or cast-iron skillet and cook until well browned, about 7 minutes. Remove Dutch oven; using tongs, flip brisket and cook on second side without weight until well browned, about 7 minutes longer. Transfer brisket to platter.
• Pour off all but 1 tablespoon fat from pan (or, if brisket was lean, add enough oil to fat in skillet to equal 1 tablespoon); stir in onions, sugar, and 1/4 teaspoon salt and cook over medium-high heat, stirring occasionally, until onions are softened and golden, 10 to 12 minutes. Add garlic and cook, stirring frequently, until fragrant, about 1 minute; add tomato paste and cook, stirring to combine, until paste darkens, about 2 minutes. Add paprika and cayenne and cook, stirring constantly, until fragrant, about 1 minute. Sprinkle flour over onions and cook, stirring constantly, until well combined, about 2 minutes. Add broth, wine, bay, and thyme, stirring to scrape up browned bits from pan; bring to simmer and simmer about 5 minutes to fully thicken.
• Pour sauce and onions into foil-lined baking dish. Nestle brisket, fat side up, in sauce and onions. Fold foil extensions over and seal (do not tightly crimp foil because foil must later be opened to test for doneness) Place in oven and cook until fork can be inserted into and removed from center of brisket with no resistance, 3 1/2 to 4 hours (when testing for doneness, open foil with caution as contents will be steaming). Carefully open foil and let brisket cool at room temperature for 20 to 30 minutes.
• Transfer brisket to large bowl; set mesh strainer over bowl and strain sauce over brisket. Discard bay and thyme from onions and transfer onions to small bowl. Cover both bowls with plastic wrap, cut vents in plastic with paring knife, and refrigerate overnight.
• About 45 minutes before serving, adjust oven rack to lower-middle position; heat oven to 350 degrees. While oven heats, transfer cold brisket to cutting board. Scrape off and discard any congealed fat from sauce, then transfer sauce to medium saucepan and heat over medium heat until warm, skimming any fat on surface with wide shallow spoon (you should have about 2 cups sauce without onions; if necessary, simmer sauce over medium-high heat until reduced to 2 cups). While sauce heats, use chef's or carving knife to slice brisket against grain into 1/4-inch-thick slices, trimming and discarding any excess fat, if desired; place slices in 13 by 9-inch baking dish. Stir reserved onions and vinegar into warmed sauce and adjust seasoning with salt and pepper. Pour sauce over brisket slices, cover baking dish with foil, and bake until heated through, 25 to 30 minutes. Serve immediately.
• To Make and Serve the Brisket on the Same Day: If you would like to make and serve the brisket on the same day, after removing the brisket from the oven in step 4, reseal the foil and let the brisket stand at room temperature for an hour. Then transfer the brisket to a cutting board and continue with the recipe to strain, defat, and reheat the sauce and slice the meat; because the brisket will still be hot, there will be no need to put it back into the oven once the reheated sauce is poured over it.

BEER-BRAISED BRISKET WITH ONIONS

Steps:

• Preheat oven to 350 degrees F.
• Pat brisket dry and sprinkle with salt and pepper.
• Heat oil in 6-8 quart wide heavy pot over moderately high heat until hot but not smoking, then brown meat well on all sides, about 10 minutes total. Transfer meat to a platter.
• Cook onions with bay leaf in the fat remaining in pot over moderate heat, stirring occasionally, until golden, 10-12 minutes.
• Remove from heat and transfer half the onions to a bowl.
• Arrange brisket over onions in the pot and then top with the remaining onions from the bowl so the meat is covered with half the onions under and half the onions over the meat.
• Add the beer, bouillon and vinegar to the pot (liquid should come about halfway up sides of meat) and bring to a boil.
• Cover pot (make sure hanle on pot lid is oven proof) and braise in middle of oven until meat is very tender, 3 to 3 1/2 hours.
• Cool in sauce, uncovered about 30 minutes.
• Transfer brisket to a clean cutting board. Skim off any fat from sauce and season to taste with salt and pepper.
• Slice meat across the grain and serve with the sauce.

ONION AND PEPPER BRAISED BRISKET

Steps:

• Heat oven to 325°F. In 4-quart ovenproof Dutch oven, heat oil over medium heat. Cook onions and bell peppers in oil 10 minutes, stirring occasionally, until tender and beginning to brown.
• In medium bowl, mix brown sugar, soup mix, chili sauce, salt and pepper. Move vegetables to side of Dutch oven. Place beef, fat side up, in Dutch oven; pour sauce over beef. Spoon vegetables over beef.
• Cover; bake 1 hour 30 minutes. Uncover; bake 1 hour longer or until beef is tender. Cover; let stand 10 minutes.
• Cut beef across grain into thin slices. Serve with vegetables and any remaining pan juices.

BEER-BRAISED BRISKET WITH ONIONS

Steps:

• Preheat oven to 350°F.
• Pat brisket dry and sprinkle with salt and pepper. Heat oil in a 6- to 8-quart wide heavy pot over moderately high heat until hot but not smoking, then brown meat well on all sides, about 10 minutes total. Transfer with tongs to a platter.
• Cook onions with bay leaf in fat remaining in pot over moderate heat, stirring occasionally, until golden, 10 to 12 minutes. Remove from heat and transfer half of onions to a bowl. Arrange brisket over onions in pot, then top with remaining onions. Add beer, bouillon cube, and vinegar (liquid should come about halfway up sides of meat) and bring to a boil.
• Cover pot and braise in middle of oven until meat is very tender, 3 to 3 1/2 hours. Cool in sauce, uncovered, 30 minutes.
• Transfer brisket to a clean cutting board. Skim off any fat from sauce, then season with salt and pepper. Slice meat across the grain and serve with sauce.

BRAISED BRISKET WITH MUSHROOM ONION GRAVY

Steps:

• Place the mushrooms in a small bowl. Bring 1 cup of the water to a boil. Pour over the mushrooms. Let stand for 30 minutes to soften.
• Remove the mushrooms from the soaking liquid, squeezing as much liquid as possible back into the bowl. Coarsely chop the mushrooms.
• Strain the soaking liquid through a coffee filter or 2 layers of cheesecloth. Set aside.
• Preheat the oven to 400 degrees.
• Heat 2 tablespoons of the oil in a heavy large Dutch oven over medium heat. Add the onions and saute for about 10 minutes, until translucent.
• Reduce heat to low. Cook for about 15 minutes, until the onions begin to brown, stirring from time to time.
• Add the vinegar and cook, stirring, for about 10 minutes, until the onions turn a deep golden brown.
• Add the wine and bring to a boil, scraping up any browned bits in the pot. Transfer the mixture to a bowl.
• Heat the remaining 2 tablespoons oil in the same Dutch oven over high heat. Season the brisket with salt and pepper. Brown well on all sides. Transfer the meat to a platter.
• Add the mushroom-soaking liquid to the Dutch oven and bring to a boil, scraping up any browned bits.
• Return the brisket to the pot, along with the onion-wine mixture, the remaining 3 cups water, the mushrooms, garlic, thyme and bay leaves. Bring to a boil.
• Tightly cover the pan. Place in the oven and cook for about 3 hours, until the brisket is very tender.
• Transfer the meat to a platter and tent with foil.
• Remove the bay leaves from the cooking liquid. Working in batches, puree the cooking liquid in a processor until smooth. Transfer to a large saucepan. Adjust seasoning and rewarm, if necessary.
• Cut the brisket across the grain into thin slices. Arrange on a platter. Spoon the sauce over the meat.

ONION-BRAISED OVERNIGHT BRISKET

Steps:

• Season the fatty side of the brisket with 1 teaspoon of the salt and 1/2 teaspoon of the pepper. Flip the brisket over.
• On a cutting board, chop the garlic. Add 1 teaspoon of the salt while continuing to chop, stopping occasionally to mash the garlic to a paste by holding your knife almost flat against the board with the dull side facing you and sliding it across the garlic to crush it. Rub the garlic paste into the non-fatty side of the brisket and season it with the remaining 1/2 teaspoon pepper. Starting with the thin side, roll the brisket up tight, jelly-roll style, with the fat on the outside, and tie it firmly with kitchen twine.
• Heat a Dutch oven or other heavy pot over medium-high heat and add 1 tablespoon of the oil. Brown the brisket evenly on all sides, about 20 minutes, and then transfer it to a platter.
• Meanwhile, preheat the oven to 225°F.
• Discard any remaining oil in the pot, wipe it out with a paper towel, and return the pot to the stove over medium-low heat. Add the remaining 3 tablespoons oil, the onions, the sugar, and the remaining 2 teaspoons salt. Cook, stirring often, for 15 to 20 minutes, until the onions are completely soft and caramelized.
• Remove the pot from the heat and add 1 cup water. Return the brisket to the pot, and use a slotted spoon to spread some of the onions on top to keep it moist. Tent it with a piece of parchment or aluminum foil by placing it on top and then crimping it snugly around the roast so that the edges nearly meet the liquid, and then cover the pot with a tight-fitting lid. Put the pot in the oven and braise for 7 hours, until the brisket is tender.
• Transfer the brisket to a warm place and use a food mill to puree the onions. Return the onion puree to the pot and heat gently, adding a little water if necessary to make a thick but pourable gravy. Slice the brisket and serve with the onion gravy.

CLASSIC BEEF BRISKET WITH CARAMELIZED ONIONS

Steps:

• In a small bowl, mix together salt, pepper, paprika and cayenne. Season brisket generously on all sides with salt mixture. (Use about 2 tablespoons and reserve remaining mixture.) If possible, wrap and refrigerate several hours or overnight, then bring to room temperature.
• Heat oven to 300 degrees. Place brisket in a shallow roasting pan or earthenware baking dish. Pour wine and 2 cups water over the brisket, then add cloves, garlic, bay leaves and allspice berries.
• Scatter about 1/3 of the sliced onions over brisket. Cover with foil or a tight-fitting lid. Place in oven and bake for about 3 hours or until meat is quite tender when probed with a fork. (Be careful not to overcook; you want slices, not shreds.)
• Meanwhile, place a large skillet over high heat and add olive oil. Add remaining onions and season with remaining salt mixture. As onions begin to brown, reduce heat to medium. Cook, uncovered, turning onion slices with a spatula every few minutes until caramelized and fork-tender, about 15 to 20 minutes. Add 1/2 cup water to onions and simmer a few minutes more. (For more flavor, use broth from the brisket pan instead.) Onions may be prepared in advance and reheated.
• To serve, transfer brisket to a cutting board. Trim extraneous fat from meat. With a large knife, cut meat across the grain into 1/4-inch slices. Strain braising liquid into a saucepan (discard solids left in strainer) and skim any rising fat from surface.
• Arrange sliced meat on a platter. Cover with caramelized onions and ladle some hot braising liquid over. Garnish with parsley sprigs and sprinkle with scallions, if using. Serve remaining juices separately.

CARAMELIZED-ONION AND WINE-BRAISED BRISKET WITH GLAZED VEGETABLES

Steps:

• Boil first 3 ingredients in pot until reduced to 4 cups, about 25 minutes.
• Preheat oven to 325°F. Heat oil in large Dutch oven over high heat. Add bones; sauté until well browned, turning occasionally, about 12 minutes. Transfer bones to bowl. Add onions, celery and allspice to Dutch oven. Season with salt; cook until onions are golden, stirring often, about 25 minutes. Continue cooking until onions are deep dark brown, scraping bottom of Dutch oven and stirring often, about 15 minutes more. Add garlic and thyme; sauté 5 minutes. Transfer onion mixture to large roasting pan. Add 1 cup broth mixture to Dutch oven. Bring to boil, scraping up browned bits; transfer to roasting pan.
• Season brisket generously with salt and pepper. Add to Dutch oven and brown over high heat, about 5 minutes per side. Place brisket, fat side up, on onion mixture in roasting pan; surround with bones. Add remaining broth mixture and tomatoes to Dutch oven; bring to boil, scraping up browned bits. Pour mixture over brisket.
• Cover roasting pan tightly with heavy-duty foil and place in oven. Bake until brisket is tender, about 3 hours 45 minutes. Remove foil. Cool brisket 2 hours. Refrigerate uncovered 3 hours. Cover brisket tightly and keep chilled 1 day or up to 3 days.
• Scrape fat from top of pan juices; discard fat. Transfer brisket to cutting board, scraping gelled juices off brisket back into roasting pan. Bring contents of roasting pan to simmer. Discard bones. Pour contents of roasting pan into coarse strainer set over large bowl. Press on solids to release as much liquid as possible. Purée solids in processor, using on/off turns. Mix enough purée into juices in bowl to form thick sauce. Add tomato paste and whisk to blend. Pour sauce into medium saucepan and simmer until heated through. Season with salt and pepper.
• Slice brisket thinly across grain at slight diagonal angle. Arrange slices in glass baking dish. Drizzle 1/2 cup sauce over; cover with foil.
• Bring large pot of salted water to boil. Add all squashes, turnips and carrots and cook until crisp-tender, about 6 minutes. Using slotted spoon, transfer to large bowl. Add potatoes to boiling water and cook until just tender, about 12 minutes. Using slotted spoon, transfer potatoes to same bowl. Add onions to boiling water and cook until almost tender, about 4 minutes. Drain and cool slightly. Peel onions; add to same bowl.
• Preheat oven to 350°F. Bake brisket until heated through, about 30 minutes.
• Meanwhile, boil margarine, honey and thyme in heavy large skillet over high heat until syrup is reduced to 1/3 cup, stirring often, about 5 minutes. Add cooked vegetables, tomatoes and asparagus; toss until heated, about 5 minutes. Season with salt and pepper.
• Arrange brisket on platter. Bring remaining sauce to simmer. Arrange vegetables around brisket. Serve, passing remaining sauce separately.

ONION-BRAISED BEEF BRISKET - AMERICA'S TEST KITCHEN RECIPE - (3.8/5)

Steps:

• 1. Adjust oven rack to tower-mlddle position; heat oven to 300 degrees. Line 13 by 9-inch baking dish with two 24-inch-long sheets of 18-inch-wide heavy-duty foil, positioning sheets perpendicular to each other and allowing excess foil to extend beyond edges of pan. Pat brisket dry with paper towels. Place brisket fat side up on cutting board; using dinner fork, poke holes in meat through fat layer about 1 inch apart. Season both sides of brisket liberally with salt and pepper. 2. Heat 1 teaspoon oil in 12-inch skillet over medium-high heat until oil just begins to smoke. Place brisket fat side up in skillet (brisket may climb up sides of skillet); weight brisket with heavy Dutch oven or cast-iron skillet and cook until well browned, about 7 minutes. Remove Dutch oven; using tongs, flip brisket and cook on secend side without weight until well browned, about 7 minutes longer. Transfer brisket to platter. 3. Pour off all but 1 tablespoon fat from pan (or, if brisket was lean, add enough oil to fat in skillet to equal 1 tablespoon); stir in onions, sugar, and 1/4 teaspoon salt and cook over medium-high heat, stirring occasionally, until onions are softened and golden, 10 to 12 minutes. Add garlic and cook, stirring frequently, until fragrant, about 1 minute; add tomato paste and cook, stirring to combine, until paste darkens, about 2 minutes. Add paprika and cayenne and cook, stirring constantly, until fragrant, about 1 minute. Sprinkle flour over onions and cook, stirring constantly, until well combined, about 2 minutes. Add broth, wine, bay, and thyme, stirring to scrape up browned bits from pan; bring to simmer and simmer about 5 minutes to fully thicken. 4. Pour sauce and onions into foil-lined baking dish. Nestle brisket, fat side up, in sauce and onions. Fold foil extensions over and seal (do not tightly crimp foil because foil must later be opened to test for deaeness). Place in oven and cook until fork can be inserted into and removed from center of brisket with no resistance, 1 1/2 to 4 hours (when testing for doneness, open foil with caution as contents will be steaming). Carefully open foil and let brisket cool at room temperature for 20 to 30 minutes. 5. Transfer brisket to large bowl; set mesh strainer over bowl and strain sauce over brisket. Discard bay and thyme from onions and transfer onions to small bowl. Cover both bowls with plastic wrap, cut vents in plastic with paring knife, and refrigerate overnight. 6. About 45 minutes before serving, adjust oven rack to lower-middle position; heat oven to 350 degrees. While oven heats, transfer cold brisket to cutting board. Scrape off and discard any congealed fat from sauce, then transfer sauce to medium saucepan and heat over medium heat until warm, skimming any fat on surface with wide shallow spoon (you should have about 2 cups sauce without onions; if necessary, simmer sauce over medium-high heat until reduced to 2 cups). While sauce heats, use chef's or carving knife to slice brisket against grain into 1/ 4-inch-thick slices, trimming and discarding any excess fat, if desired; place slices in 13 by 9-inch baking dish. Stir reserved onions and vinegar into warmed sauce and adjust seasoning with salt and pepper. Pour sauce over brisket slices, cover baking dish with foil, and bake until heated through, 25 to 30 minutes. Serve immediately. To Make and Serve the Brisket on the Same Day If you would like to make and serve the brisket on the same day, after removing the brisket from the oven in step 4, reseal the foil and let the brisket stand at room temperature for an hour. Then transfer the brisket to a cutting board and continue with the recipe to strain, defat, and reheat the sauce and slice the meat; because the brisket will still be hot, there will be no need to put it back into the oven once the reheated sauce is poured over it.