2/3 c. Hellmann's mayonnaise (no substitute)
2/3 c. sour cream
1 tsp. Lawry's seasoned salt
1 tsp. dill weed
1/2 tsp. Worcestershire sauce (or more to taste)
1/2 tsp. Accent
1 tbsp. parsley flakes (fresh or dried)
1 tbsp. red onion, chopped

Mix and chill several hours or overnight. More spices may be added for more flavor.