By Elena Molokhovets
Beat 2¼ glasses thick, fresh sour cream with a whisk over ice until it forms soft peaks. Sprinkle on ¼ lb sugar, mix with ½ glass warm isinglass, and set in a cold place.
Sometimes the sour cream is combined with an equal amount of thick fresh cream. Mix the creams with isinglass, sugar, and berries from jam without juice.
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