Claire Saffitz Strawberry Sponge Cake Food

STRAWBERRY AND CREAM LAYER CAKE

Steps:

• Fill a small saucepan with about 1 inch of water and set over medium heat until the water steams.
• Meanwhile, coarsely chop about a quarter of the strawberries and combine in a medium heatproof bowl with the sugar. Cover the bowl tightly and set it over the saucepan. Reduce the heat if necessary to keep the water just below a simmer and allow the berries to sit, swirling the bowl once or twice to dissolve any stubborn sugar clumps, until they've released all their juices, are mushy, and swim in a translucent red liquid, 35 to 45 minutes. Remove the bowl from the heat, uncover and strain through a fine-mesh strainer. (You should have 1/2 to 3/4 cup of strawberry syrup.) The mushy berries will have given off their color and flavor, and even though you won't use them in the cake, they're still tasty. Reserve the berries for spooning over pancakes or yogurt.
• In a separate medium bowl, combine the heavy cream, crème fraîche and salt. Whisk the mixture vigorously by hand, or beat with a hand mixer on medium-high, until thick, light and holding a medium peak. Chill the bowl of whipped cream. Thinly slice the remaining raw strawberries lengthwise.
• Invert the sponge cake on a flat serving plate or cake stand. Holding a long serrated knife horizontally and parallel to the work surface, use it to lightly score all around the side of the cake at the midway point. Then, using long, even strokes and still holding the knife parallel to the surface, slice clean through the cake, using the score marks as a guide, to cut it into two even layers. Set the top layer aside.
• Use a pastry brush to dab several tablespoons of the strawberry syrup across the bottom layer, lightly soaking the entire surface. Pull the bowl of cream from the refrigerator and dollop about half of it across the soaked layer, then spread in an even layer all the way to the edges. Arrange half of the sliced strawberries on top of the cream, then place the second cake layer on top of the first, cut side up. Lightly soak the top layer of cake with the strawberry syrup, reserving any remaining syrup for serving. Spread the remaining cream on top of the cake, then pile the remaining sliced strawberries over top. (If not serving immediately, cover loosely and refrigerate until ready to serve.)
• Slice the cake with a serrated knife and serve. Drizzle the slices with any remaining strawberry syrup. The cake is best served the day it's made, but will keep, covered and chilled, for up to 3 days.

SPONGE CAKE

Steps:

• Arrange an oven rack in the center of the oven and heat the oven to 325 degrees. If making a roulade, brush the bottom of a 10-by-15-inch jelly roll pan with a light coating of oil. Do not brush the sides, as the cake needs to be able to cling to the pan as it rises. Line only the bottom of the pan with a piece of parchment paper, smoothing to eliminate air bubbles. If baking in a 9-inch springform pan, leave the pan ungreased and unlined.
• In a wide, medium bowl, combine the egg whites, 1/4 cup sugar, the kosher salt and cream of tartar. Beat the mixture with a hand mixer fitted with the beaters on medium-low speed until the mixture looks frothy, then start to slowly increase the speed to medium-high. Continue to beat the egg whites until you have a dense, voluminous, glossy foam that forms stiff peaks, about 4 minutes. When you lift the beaters out of the bowl, the egg whites should come to a straight point that doesn't droop. Don't beat beyond this point, or the whites will become dry and lumpy. Set the bowl aside.
• In a separate wide bowl, combine the egg yolks and the remaining 1/4 cup sugar. Beat with the hand mixer (no need to wash it after you beat the egg whites) on medium-high until the mixture is very pale and fluffy and forms a slowly dissolving ribbon as it falls off the beaters back into the bowl, about 4 minutes. Slowly stream in the 1/4 cup oil, beating constantly to ensure it emulsifies into the yolk mixture, until you have a smooth, light mixture that looks like mayonnaise.
• Reduce the mixer to the lowest speed, add half of the flour and mix just until incorporated. Add the vanilla extract and 1 tablespoon water, mix until incorporated, then add the remaining flour and mix just until it disappears. The mixture will have thickened and look a bit like cake batter.
• Fold the yolk mixture once or twice with a large flexible spatula to make sure it's evenly mixed, then scrape about a third of the egg white mixture into the yolk mixture and thoroughly fold in the whites until the mixture is loosened. Working more gently, fold in half of the remaining egg whites until only a few streaks remain. Fold in the remaining whites, scraping the bottom and sides of the bowl, until you have a light, smooth, evenly mixed batter.
• Scrape the batter into the pan and smooth into an even layer. Firmly rap the pan on the surface once or twice to pop any large air bubbles. Bake the cake until it's golden brown, firm and springy to the touch across the entire surface, 25 to 30 minutes for a jelly roll and 30 to 35 minutes for a 9-inch cake. Remove the cake from the oven and immediately invert the pan onto a wire rack. Let the cake cool completely upside down to prevent it from collapsing.
• Reinvert the cooled pan and cut along the sides with a small offset spatula or paring knife to loosen the cake. It will sink a bit, which is normal. If making a jelly roll, turn the sponge out onto the wire rack and peel off the parchment. If making a 9-inch cake, remove the ring of the springform pan, invert the cake onto the rack, and carefully peel off the bottom of the pan (it should come away cleanly, leaving behind just a thin film).
• Use the sponge as desired. The unfilled sponge cake will keep at room temperature, tightly wrapped, for several days, but will become sticky after the first day.

RASPBERRY AND CREAM ROULADE

Steps:

• Place a clean dish towel on a large cutting board and lightly dust all over with confectioners' sugar. Place the sponge cake on top of the towel, parchment side up; peel off and discard the parchment. Dust the cake lightly with more confectioners' sugar. Starting at one of the longer sides, loosely roll up the sponge inside the towel. Set aside the sponge while you prepare the filling. (This will "train" the sponge and make it easier to roll up after it's filled.)
• In a small bowl, mash together the fresh raspberries and raspberry jam until the berries break down; set aside.
• In a medium bowl, combine the heavy cream, mascarpone and kosher salt. Whisk vigorously by hand, or beat with a hand mixer on medium-high, until the mixture is thick and light, and holds a medium peak. Chill the bowl of whipped cream while you start to assemble the cake.
• Carefully unroll the cake so the short sides are to your right and left, and the longer sides near and away from you. Spread the raspberry mixture in a thin, even layer across the entire surface, leaving a border of about 1 inch along the longer side that's farther from you. Pull the cream from the refrigerator and dollop all across the surface of the cake. Spread it in an even layer over top of the raspberry layer, this time leaving a 1-inch border on each of the longer sides.
• Roll the cake back up, starting with the longer side closest to you and using the towel to help you (without rolling the towel into the cake). Wrap the towel around the cake, allowing it to rest on the seam. Transfer the cutting board to the refrigerator and chill until the cake has had a chance to absorb some of the raspberry juices and set, at least 1 hour.
• Remove the cutting board from the refrigerator and gently unwrap the cake. Use a serrated knife to trim off the ends of the cake, exposing a clean spiral. Use the towel and/or cutting board to transfer the cake to a serving platter. Dust with more confectioners' sugar, cut crosswise into slices with a serrated knife, and serve. The cake is best served the day it's made, but will keep, covered and chilled, for up to 3 days.

STRAWBERRY-CREAM SPONGE ROULADE

Steps:

• Preheat oven to 350 degrees. Butter a 10-by-15-inch jelly roll pan. Line it with a sheet of waxed paper cut to fit the width but extending a few inches at either end. Butter the paper.
• Sift the flour, baking powder and salt together and set aside.
• Beat the eggs at high speed for five minutes, until very thick and light. Gradually beat in the sugar, then at low speed fold in the flour mixture.
• Spread batter in the pan and bake 20 minutes, until puffed and golden. Run a knife around the edges.
• Heavily dust a clean linen towel with sifted confectioners' sugar and invert the cake, pan and all, onto the towel. Lift off the pan and peel off the paper. Roll the cake in the towel and set aside to cool.
• When the cake is cool, gently unroll it and spread it with the whipped cream. Sweeten the berries to taste and spread them over the cream. Reroll the cake. Wrap the cake in foil and refrigerate until ready to serve.