This Mittel-european spread is rich, smoky, and piquant. Cream a stick of softened butter with 1 cup of drained cottage cheese. Blend until very smooth. Mix with a half cup sour cream, then add a tablespoon of sweet paprika, a tablespoon of drained, chopped capers, a tablespoon ground caraway seeds, 2 very finely minced green onions, and a teaspoon of dry mustard. Mix very well, mold, and refrigerate. Bring to room temperature before serving with crudites—radishes are traditional—and/or rye toast.