1 c. mayonnaise
4 oz. crumbled blue cheese
3 tbsp. milk
2 tbsp. lemon juice
1 tbsp. finely chopped onion
2 tsp. sugar
1/4 tsp. Worcestershire sauce
1/4 tsp. dry mustard
1/4 tsp. salt

Mix all ingredients. Cover and chill. Makes about 1 1/2 cups.