BLACKBERRY JAM
Source of Recipe
GRANDMA
List of Ingredients
4 cups crushed blackberries (about 2 quarts of blackberries)
7 cups sugar
1 pouch liquid pectinRecipe
Sterilize canning jars and prepare two-piece canning lids according to manufacturer's directions.
Prepare fruit. Sort and wash fully ripe berries; remove any stems and caps. Crush berries and extract juice.
To make jam, measure crushed blackberries into a kettle. Add sugar and stir well. Place on high heat and, stirring constantly, bring quickly to a full boil with bubbles over the entire surface. Boil hard for 1 minute, stirring constantly. Remove from heat and stir in pectin. Skim.
Fill hot jam immediately into hot, sterile jars, leaving ¼ inch headspace. Wipe rims of jars with a dampened clean paper towel; adjust two-piece metal canning lids. Process in a Boiling Water Bath for 15 minutes
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