2, wash. Do not use any stain remover, do not wipe, rinse repeatedly with water, remove floating soil, weeds can be. (Because a layer of white film on the outside of the grape skin is the best yeast.)
3, drying, picking ripe picked into one.
4, it is recommended to find a large, clean Coke bottle, and then to the small mouth of a race of grapes, each of which should be pinched and raced in.
Add sugar, generally add 10-30%, I added 15%. Stir well, remember not to race full, fermentation will expand, to have space for it. It is recommended to stuff 70% of the space on the line. Screw on the lid, remember to unscrew it every day to loosen the air, otherwise it will burst.
5, after observing that the grape skin became white, you can use two layers of gauze to filter out the grape skin, grape seeds and other impurities. Generally with the changes in the environment, this time ranges from 7-15 days.