Basic Berry Jam 4 qt Berries
Sugar
Use only freshly-picked berries and include a good percentage of under-ripe
berries. Pick over carefully and wash, removing stems, hulls, and debris.
Place in enameled or stainless steel pot, mash well, and bring to a boil
over moderate heat. Cook just until berries soften.
Put through food mill. If desired, this pulp may be strained through a
finer sieve. Measure pulp into an enameled or stainless steel pot that is
at least four times taller than level of pulp. For every cup of pulp, add 1
cup of sugar. Bring to a boil over moderately high heat and continue to
boil until the temperature of the jam reaches 221 degrees F on a candy
thermometer. (The stage at which the mixture will form a jelly of the
desired consistency if a spoonful on a small dish is placed in the freezer
for one minute. ) Keep an eye on the boiling jam and stir frequently!
When jam is ready, ladle into sterilized jars, seal, and process according
to jar manufacturer's instructions.
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