1, sugar for the total weight of the grapes 15-20% can be, a catty of grapes put 0.15 pounds to 0.2 pounds of sugar can be.

2, homemade wine steps: wash the grapes, placed in a ventilated cool place to dry, avoid exposure to the sun. The grapes will be picked, rotten culling. Add sugar, crush the grapes, squeeze out the juice as much as possible, and mix well with sugar.