Sour cream от John Spottiswood

Blend one cup cottage cheese plus two or three tablespoons milk or buttermilk plus two tablespoons lemon juice OR blend equal parts cottage cheese and plain yogurt OR blend one cup cottage cheese plus one-third of a cup buttermilk plus one tablespoon lemon juice. (Adapted from directions in the Joy of Cooking by Marion Rombauer Becker and Irma Rombauer. See my sources.) OR blend one cup cottage cheese plus two tablespoons lemon juice plus two tablespoons fat-free mayonnaise plus one-fourth cup nonfat buttermilk (adapted from a recipe in the New Laurel's Kitchen Cookbook) OR Combine 7/8 cup buttermilk or yogurt plus three tablespoons butter or margarine (From a Gateway Virginia recipe. See my sources.) OR one cup buttermilk OR one cup well-drained yogurt (if making cheesecake, use whole milk yogurt) OR one cup sour milk OR let stand for 5 minutes: one cup evaporated milk plus one tablespoon lemon juice or vinegar OR jocoque OR smetana (lower calories)