Bleu Cheese Dip

This recipe can be used either as a dip or as a salad dressing:

6 cups of mayonnaise (use light mayonniase for a lighter version)
2 cups sour cream (use low fat for a lighter version)
8 ounces of bleu cheese, crumbled
1 tablespoon ketchup
1 tablespoon Worcestershire sauce
1/4 teaspoon garlic powder
1/4 teaspoon onion powder
salt and pepper to taste

Mix together the mayonnaise, sour cream, onion powder, garlic powder, salt and pepper. Mix well. Add the remaining ingredients and mix. Cover and refrigerate, allowing flavors to blend. Serve cold.