1,500kg(52.9 oz) hulled strawberriesbuy 2 kg (70.5 oz) of strawberries
1,200kg(42.3 oz) sugar800g (28.2 oz) per 1 kg of hulled fruit
The juice of one and half lemons
2knobs butteroptional
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PRÉPARATION
Sterilize the jars
Before starting your jam, wash the jars thoroughly with water and dish soap. Place them in a pot with their lids and cover with water.
Bring to a boil and cook for 10 to 15 minutes. Remove from the pot using tongs to avoid burning yourself. Place the jars upside down on a towel.
Prepare the strawberries
Wash the strawberries thoroughly and cut off the base that contains the stem. Cut them into small pieces and place them in a large pot.
Macerate the fruits
Add the sugar and lemon juice, and mix well.
Cover the pot with plastic wrap and place it in the refrigerator until the next day. If you are in a hurry, you can let it macerate for just 2 hours, until the sugar dissolves.
Cooking the strawberry jam
The next day, mix well, add the knob of butter, and then place the pot over high heat. Bring to a boil, stirring occasionally.
If despite the butter, a small foam forms, remove it with a skimmer at the end of the jam cooking.
Cook for 20 minutes from the boiling point. Also, check the texture, which should be thick and translucent.
You can use a potato masher to refine the texture of the jam.
Check the setting of the jam.
If you have a thermometer, insert the probe into the jam and stop cooking when the temperature reaches 105°C (221°F).
If you don't have a thermometer, perform the plate test to check if the jam has set. Place a teaspoon of jam on a plate that has been chilled in the freezer beforehand. The jam should set and not run when you tilt the plate.
Jarring Jam
Remove the pot from the heat and immediately fill the sterilized jars with the still very hot jam. Seal tightly, ensuring the lids are securely closed.
Turn the jars upside down on a towel and let them cool completely before turning them over. Label them with the date of production.
Store the jars of jam in a dry place away from light. Strawberry jam in well-sterilized jars can be stored for up to 1 year. Enjoy it until the next strawberry season returns.