Old-Fashioned Blackberry Jam

Makes approximately 8 jars

prepSterilize jars and lids by running through dishwasher and drying on high heat, or washing in very hot water and air-drying on a tea towel
4–6 cups / 950–1425 ml fresh blackberries, rinsed and mashed	Cook blackberries, boil 3 min	Add sugar, stir constantly, boil 3 min	Remove from heat, whisk 3 min	Seal jars with lids boiled in water	Cool on counter until lids pop & seal
4–6 cups / 800–1200 g sugar, equal to mashed berries
water for boiling lids

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