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squirrelydan76
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Combine frozen berries, sugar, lemon juice and seeds in a large deep heavy-based frying pan or saucepan. Stir over medium heat until the sugar dissolves.
Add lemon seeds wrapped in muslin and bring to a boil. Reduce heat and boil gently for 45-50 minutes, skimming any foam from the surface.
Stand for 10 minutes then carefully pour the jam into sterilised jars. Seal with lids and store in a cool dark place for up to 6 months.