3/4 c. sour cream
1/2 tsp. dry mustard
1/2 tsp. black pepper
Dash of garlic powder
1 tsp. Worcestershire sauce
1 1/3 c. mayonnaise
4 oz. bleu cheese

Blend first 5 ingredients for 2 minutes on low speed. Add mayonnaise, blend 1 minute on low. Then add 4 ounces of crumbled bleu cheese, blend 4 minutes on low speed. Let sit 24 hours, before using.