5cupsgrape juice+ 1/2 cup water (if using fresh grapes)
1(1.75-ounce) boxpowdered pectinregular or low-sugar needed
7cupsgranulated sugaror 4 cups for low-sugar
1/2tablespoonbutteroptional
Instructions
If using fresh grapes: Wash, stem, and crush with water. Simmer 10 minutes, strain, and measure 5 cups juice. Chill overnight to remove crystals.
Combine juice and pectin in a pot. Bring to full boil, stir in sugar, boil 1 minute. Remove from heat and skim off any foam with a slotted metal spoon.
Ladle into hot jars, leaving ¼-inch headspace.
For canning: Process in water bath 10 minutes (adjust for altitude). Cool for 24 hours on towel-lined surface and check seals.
Notes
Low-sugar: Use no-sugar-needed pectin and 4 cups sugar.
Storage: Refrigerate up to 3 weeks, freeze 6 months, or can for 12-18 months.
Time is based on using already prepared juice and storing in the refrigerator or freezer.