Video: Summer Black Grape Jam
1.
Sterilize the jam jar: Put the cleaned glass jar in the pot, and pour cold water that has not filled the jar.
2.
After the water boils, continue to cook for 7-10 minutes. Take it out after cooking, drain and set aside. (You can also put it in the oven/steam box and bake/steam at 100 degrees for about 15 minutes. Do not preheat the oven/steam box in advance, otherwise the glass bottle may crack.)
3.
Sprinkle some flour on the summer black grapes.
4.
Add water, soak for about 10 minutes, rub gently to clean, and then rinse off with water.
5.
Xiahei grape is such a seedless variety that can be eaten with skin. (If you use other varieties of grapes, see Introduction 1.)
6.
Put the grapes in a blender and beat them into a finer juice.
7.
Put grape juice and rock sugar in a stainless steel pan. If the grapes are sweet and have insufficient acidity, you can add about 5g of lemon juice. This time the acidity of the grapes is just right, so no lemon juice is added. (The water will evaporate faster in a pan, because the jam has acidity, do not use a cast iron pan.)
8.
Simmer on medium heat for 15-20 minutes. Don't turn on the heat too much. The cooking process needs to be stirred to avoid muddy bottom.
9.
Detection of jam: put a plate in the refrigerator in advance, wait until the jam starts to have a thick consistency, and drop a drop on the frozen plate. If the jam loses fluidity, it means that the consistency of the jam is OK.
10.
While the jam is hot, put it into a sterile glass bottle, tighten the lid, and cool it in the refrigerator. (For storage time, see Introduction 2.)
11.
It can be used to spread toast~ the jam will become thicker after cooling. 1000g summer black grapes, 500g jam jars contain 1.5 bottles.