Toss loose grapes, wash them, and put them in a pot with a small amount of water. Bring to a boil until they disintegrate. Mash with a wooden spoon and let it simmer until the grapes release their juice. Strain through a fine linen cloth. For each cup of juice add 200g of sugar. Bring to a boil again, reaching the point mentioned in the guava jelly recipe.
Toss loose grapes, wash them, and put them in a pot with a small amount of water. Bring to a boil until they disintegrate. Mash with a wooden spoon and let it simmer until the grapes release their juice. Strain through a fine linen cloth. For each cup of juice add 200g of sugar. Bring to a boil again, reaching the point mentioned in the guava jelly recipe.
