Increase the ingredients as necessary for the quantity desired. This recipe can also be used for berries.
1 cup grapes
1/2 cup granulated sugar
Put firm-ripe, washed, stemmed, halved and seeded grapes in the bottom of a clean, hot quart jar. Add sugar. Fill jar with boiling water, leaving 1/2-inch headspace; seal. Process in a boiling water bath for 10 minutes.