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on how thick you like your jam.
How to tell when it’s done:
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The plate test: Place a small plate in the freezer for a few minutes. Drop a spoonful of jam onto the cold plate. Let it sit for 30 seconds, then push it with your finger. If it wrinkles and holds its shape, it’s done.
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Temperature: The jam should reach 220°F (105°C) on a candy thermometer.
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Visual: It should be thick, glossy, and coat the back of a spoon.
Step 5: Remove Scum (Optional)
As jam cooks, foam may rise to the surface. Skim it off with a spoon for a clearer final product.
Step 6: Jar the Jam
If canning:
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Ladle hot jam into hot sterilized jars, leaving ¼-inch headspace.
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Wipe rims clean, place lids, and screw on bands until fingertip-tight.
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Process in a boiling water bath for 10 minutes (adjust for altitude).
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Remove jars