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up to 3 weeks, or process in a hot water bath for shelf-stable storage (up to 1 year).
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Tips for Success
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Taste as you go. Depending on your rhubarb and blueberry sweetness, you may want to adjust the sugar.
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No pectin? This jam will still thicken naturally thanks to the fruit’s natural pectin. Just simmer a bit longer.
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Sterilize your jars if canning: boil jars and lids for 10 minutes, then fill while hot.
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Ways to Use Blueberry Rhubarb Jam
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Spread on gluten-free toast or English muffins
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Swirled into oatmeal
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