The Bitter Socialite: Homemade blueberry jam

Published: May. 19, 2020 at 11:14 AM CDT
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Homemade blueberry jam


7 cups sugar

8 cups blueberries

1 package fruit pectin

1 tablespoon butter

3 tablespoons lemon juice


5 pint-sized jars Jar rings and lids

Dry measuring cup

Liquid measuring cup

Large pot ladle

2 large bowls


1. Sterilize jars, rings, and lids by placing them in a large stock pot of water and bringing to a rolling boil for 10 minutes.

2. Measure out 7 cups of sugar using a dry measuring cup and place in a separate bowl. *Reducing the amount of sugar will result in jam failure.

3. Thoroughly wash blueberries and remove any debris such as leaves, stems, or thorns. Using a potato masher (or hands), crush berries, add lemon juice and stir until combined. Using a dry measuring cup, measure out 5 cups of crushed berries and add to a large saucepan.

4. Add 1 package of fruit pectin to prepared fruit in pot. Stir in butter to reduce foaming while cooking.

5. Bring mixture to a roiling boil over high heat, stirring constantly. (A roiling boil is one that does not stop bubbling when stirred.)

6. Add sugar to mixture and return to a roiling boil and cook for exactly 1 minute. Remove mixture from heat, and if necessary, remove any foam with a large spoon.

7. Using a ladle, immediately fill the prepared jars, filling each 1/4 inch from the top. Wipe away any excess from the threads. Place top on jar, and firmly screw the jar ring onto the jar.

8. Place jars upside down on a towel and allow to sit for 5–10 minutes. Flip over and allow to cool completely. As jars cool, a popping sound will be heard, signaling that the jar lid has properly sealed. Store prepared jams in a cool, dry place.

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