Wash and pick over the grapes and place with sugar in a 2-gallon jar. Fill with cold water. Cover with cheesecloth and keep in a warm place. Stir twice a week for 6 weeks.
Strain and let stand 2 weeks longer to settle. Strain again. Fill hot sterilized jars with wine. Place corks over bottle very lightly at first; as they cool, push corks down; then cover with melted paraffin or sealing wax to make the seal airtight.
