Crush strawberries and blueberries.
Place berries, sugar, corn syrup
and lemon juice in a large saucepan
and bring to a full rolling boil over high heat.
Stir constantly.
Reduce heat and stir frequently.
Boil for 50 min.
Remove from heat and skim.
Pour into hot 1/2 pint jar.
Seal and process in boiling water bath for 5 min.