Blueberry Jam with Lemon Juice

Jam - Blueberry Jam with Lemon Juice by Romanita K. - Recipia

Blueberry jam is made from 4 kg of fruit, 2 kg of sugar and the juice of two lemons, cooked over low heat until it sets. It comes out thick, with the taste of ripe blueberries and a slightly sour note of lemon, and it keeps well in closed jars. I spread it on warm bread with butter, while it is still a bit runny. Preparation: 30 minutes. Cooking: 70 minutes. Resting: 195 minutes. Total time: 295 minutes. Servings: 12. About 860 kcal and 2 g protein per serving.

Ingredients

  • 4 kg blueberries
  • 2 kg sugar
  • 2 lemons (juice)

Preparation

1. Sterilize the jars: wash them and place them on a metal tray in the oven heated to 120°C for 30 minutes, then let them cool there. 2. Put the blueberries in a colander and rinse them under cold running water. 3. Remove the stems and leaves from the blueberries. 4. Put the blueberries in a bowl and sprinkle 2 kg of sugar over them. Shake the bowl gently so the fruit mixes with the sugar, then leave it in the fridge for at least 3-4 hours, until a syrup forms. 5. Put the bowl over low heat and cook the mixture for about 35 minutes, stirring from time to time and skimming the foam, until small bubbles form on the surface. 6. When the syrup starts to thicken, pour in the juice of the 2 lemons. 7. Do the test: take a little syrup with a spoon and put a few drops on a cold plate kept 5 minutes in the freezer. If the jam has set, the drops stay round like dewdrops; if not, they spread on the plate and it cooks 5 more minutes, then test again. 8. Pour the hot jam into the sterilized jars. Screw the lids on tightly, then turn the jars upside down for 15 minutes. Cover them with a thick blanket and let them cool slowly.

Notes

I made it 2 years ago and the jam kept very well, I only finished the last jar recently. Closed jars keep in a cool, dark place. Choose blueberries that are ripe but firm, because soft ones crush and the jam comes out watery. If they are very juicy, cooking takes longer, so don't rush. It may not set the first time, so cook it again and repeat the plate test. It goes well with pancakes or plain yogurt. The jam is gluten-free, dairy-free and nut-free, because it has only blueberries, sugar and lemon.

Frequently asked questions

Can frozen blueberries be used?

Yes, but thawed and well drained. After thawing they release more juice, so cooking may take longer until the syrup forms.

What do I do if the jam is too thick after cooling?

Put it in a saucepan with 2 tablespoons of boiled water and warm it over low heat, stirring until smooth.

How do I recognize ripe blueberries when buying?

They are dark blue, with a whitish-blue bloom on the skin, firm and without spots. Soft and watery ones take longer to cook.

Tags

Category: Jam Author: Romanita K. Views: 1071 Date: 09.11.2024
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