Directions: Measure berries and sugar into a large kettle. Mix well.
Bring quickly to a full boil and boil idly, stirring constantly, until
mixture reaches 220 F or mixture thickens. Remove from heat: skim. Ladle
into clean, hot, sterilized containers. Cap with 2-piece canning lids and
process 5 minutes in a boiling water bath. Makes 4 half -pints.