1 c. yogurt
1 tbsp. lemon juice
1/4 tsp. prepared mustard
1 hard boiled egg, chopped fine
1/4 tsp. celery seed or curry
1/2 tsp. salt

Mix all ingredients thoroughly. Keep in refrigerator. Do not use until chilled for at least 1/2 hour. Yield: 1 cup - 1 tbsp. = 15 calories.