Jam Recipe Mary Berry Food

BLACKCURRANT JAM

Steps:

• If you don't have a cooking thermometer, put a saucer in the freezer. Sterilise the jars you want to use. Tip the blackcurrants into a heavy-based saucepan with about 100ml of water. Bring to the boil and simmer for 5 mins until the fruit has broken down to a chunky pulp. Leave to cool slightly.
• You now have two options. For a smooth jelly-style jam, squash the fruit through a sieve into a bowl. If you prefer your jam chunky and seeded, leave the pulp as it is. Whether it's strained or unstrained, weigh the fruit pulp and then add 400g of sugar to every 500g of pulp, then tip back in the saucepan.
• Pour in the lemon juice then heat gently, stirring, to dissolve the sugar. Turn up the heat, then boil hard for about 10 mins or until it reaches 105C (setting point) on a cooking thermometer. If you don't own a thermometer, test for setting point by spooning a little jam onto the cold saucer. After a couple of minutes gently push your finger through the jam - if the surface wrinkles, it's ready. If not, return to the boil for 2 mins, then re-test.
• Take off the heat and skim off any froth with a slotted spoon. Cool for 10-15 minutes. Stir gently to distribute the fruit, then ladle into sterilised jars. Keeps for 6 months in a cool dry cupboard.

RHUBARB & VANILLA JAM

Steps:

• Put a small plate in the freezer. Put the rhubarb into a preserving pan or your largest saucepan with the sugar and halved vanilla pods. Heat gently, stirring, until all the sugar has dissolved, then squeeze in the lemon juice and increase the heat.
• Boil for about 10 mins, skimming off the scum as you go (the fruit should be soft). Test for setting point by spooning a little onto your chilled plate. After 1-2 mins, push your finger through the jam - if the surface wrinkles it is ready, if not, keep cooking for 2-min intervals, testing in between. (Or if you have a sugar thermometer it should reach 105C)
• Once the jam is ready, let it cool for about 15 mins before ladling into warm sterilised jars and sealing. Will keep for 6 months in a cool, dark place.

HOMEMADE RASPBERRY JAM

Steps:

• Before you start, sterilise your jars (see tip below) and put a plate in the freezer to chill. Tip half the raspberries into a preserving pan and add the lemon juice. Mash the berries to a pulp over the heat with a potato masher, then leave to cook for 5 mins. Tip the cooked berries into a sieve over a bowl, then once all of the juice has drained off, firmly work the pulp through the sieve with a wooden spoon until you are left with just the seeds.
• Tip the juice and pulp back into the preserving pan and stir in the sugar. Heat gently, then add the remaining whole raspberries. Bring to the boil, then boil rapidly for 5 mins. Remove from the heat and drop a little jam onto the chilled plate. Now push your finger through it - it should wrinkle and look like jam. If it doesn't, boil for 2 mins, then test again.
• The top of the jam may look like it has sediment on it, but I find that if you stir it well as it cools, a little of this disappears. Pour into the jars and seal. It will keep unopened for a year, although the lovely bright colour will darken a little. Once open, keep in the fridge.

BLUEBERRY JAM

Steps:

• Put a plate in the freezer for you to test your jam is set later. Sterilise two 500ml jam jars so they are ready to use.
• Put the blueberries, sugar, vanilla and lemon in a large heavy-based saucepan over a medium heat. Crush the blueberries a little with a potato masher. Bring to the boil, then reduce to a simmer and cook for 30 mins. Skim off any skum that has formed on the top with a spoon and discard.
• Test the jam is set by spooning a mound on to your cooled plate. Put in to the fridge for 3 mins. If the jam forms a skin and ripples when you push it with your finger, it's ready. If not, return to the heat for 5 more mins then repeat the test. Do this until you reach setting point.
• Leave the jam to sit for 10 mins off the heat. Ladle into your warm, sterilised jars and seal the lids on top. Leave to cool completely. Will keep for six months unopened in a cool, dry place, or two weeks once opened in the fridge.

BERRY JAM

Steps:

• Toss berries and sugar together in a large, heavy-bottomed pot. Let sit for at least 15 minutes and up to overnight, periodically tossing to coat and to dissolve the sugar. (This will help coax the juices out of the fruit.)
• Place a small plate in the refrigerator to chill. (You'll use this later.)
• Bring the fruit to a strong simmer over medium heat until the berries burst and the juices start to boil, about 15 minutes. If using a vanilla bean as an add-in, put it in the pot at this point.
• Increase the heat to medium-high. Cook the jam, at first stirring occasionally with a wooden spoon or spatula, then more frequently as the juices thicken. Cook until most of the liquid has evaporated and the fruit has begun to break down, 40 to 50 minutes. How much it breaks down will depend on its type and ripeness: For example, strawberries are likely to retain more of their shape, while raspberries will break down almost entirely.
• As the jam cooks, the liquid will reduce, the sugars thicken and the natural pectins activate. You'll notice the liquid go from a rapid, rolling boil with smaller bubbles to a slow, thick, tarlike boil with larger bubbles: This is the stage at which it's most important to stir constantly along the bottom of the pot to prevent scorching and sticking. (Sugar is heavier than water and will concentrate there, increasing the chance that the fruit will burn.) It's also the stage at which splattering may occur, so take care in stirring.
• Once the jam reaches a slow, thick boil, add lemon juice and continue to cook, stirring constantly until the jam returns to its earlier consistency, about another 5 minutes. To test the consistency, spoon a bit of jam onto the chilled plate, return it to the refrigerator and chill for 2 minutes. Drag your finger through it: It should hold its shape on either side without appearing watery or runny. If it's not there yet, cook a few minutes more. (Note: Some fruit, like strawberries, contain more water and less natural pectin than say, a raspberry. This means the jam will never be quite as thick or gelled, but it will still be delicious).
• Remove from heat, and incorporate any of the add-ins listed (see notes). Pick out vanilla bean if you added it earlier. Divide jam between several 8-ounce canning jars, leaving 1/4-inch head space, and seal immediately. Can the jams (see our How to Make Jam guide for more instruction), or store in the refrigerator, using them within a couple of weeks.