How to Make Blueberry Rhubarb Jam

This homemade Blueberry Rhubarb Jam is a delightful combination of tangy rhubarb and sweet, juicy blueberries. The result? A vibrant, flavorful spread that’s perfect for your morning toast, yogurt, or as a special treat for your next breakfast. Whether you’re looking to try something new or impress your guests, this jam is sure to become a kitchen favorite!
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Ingredients:
- 3-1/4 cups blueberries
- 2-1/4 cups rhubarb, diced into 1/2-inch pieces
- 1/2 cup water
- 1 tablespoon lemon juice
- 1 package (1.75 ounces) fruit pectin
- 5-1/2 cups sugar
Instructions:
- Crush the blueberries in a big saucepan using a potato masher. Add the pectin, rhubarb, water, lemon juice. Cook for one minute after rolling the mixture to a boiling point.
- Add the sugar; stir to mix; then, return to a high rolling boil. Boil for still another one minute.
- Set up a boiling-water canner and heat jars in simmering water just before use. Set aside; wash the lids in warm, soapy water.
- Turn off the jam from the heat and skim any froth. Leaving a one-fourth-inch headspace, ladle the hot jam into the heated jars. After cleaning the jar rims, put lids on. Tightly screw on the metal bands.
- Spend ten minutes boiling-water bath canner processing the jars. See our comprehensive guide on water-bath canning for further information.
- Ten minutes later turn off the heat and take off the cover. Let the jars sit for ten minutes before pulling them from the water.
- Set the jars on a counter covered with a kitchen towel and let them cool undisturbed. The jars closing may produce a "ping" sound.
- Remove the screw bands 24 hours later and lightly press on the lids to test the seals. Store the jam for up to a year in a cool, dry location.
Freshness Matters: Use fresh, ripe blueberries and rhubarb for the best flavor.
Prevent Foam: Skim the foam off the jam to ensure a smooth texture.
Proper Seal: Ensure the jar rims are clean before sealing to avoid leaks.
Store Safely: Store sealed jars in a cool, dark place to preserve the jam for longer.
Test Seals: After 24 hours, press the lid to check if it’s properly sealed.