Canning Supply
Home canning and food preservation supplies since 1989
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Blackberry Jam

Ingredients:
  • 6  cup  blackberries
  • 1  each  package powdered pectin
  • 8 1/2  cup  sugar
Directions:
Sterilize canning jars and prepare two-piece canning lids according to manufacturer's directions. To prepare fruit, sort and wash fully ripe berries; remove any stems or caps. Crush berries. If they are very seedy, put part or all of them through a sieve or food mill. To make jam, measure crushed berries into a kettle. Add pectin and stir well. Place on high heat and, stirring constantly, bring quickly to a full boil with bubbles over the entire surface. Add sugar, continue stirring, and heat again to a full bubbling boil. Boil hard for 1 minute, stirring constantly. Remove from heat; 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 Water Bath Canner.

Yield: About 11 or 12 half-pint jars

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