3/4 c. Creole mustard (brown mustard)
3/4 c. salad oil
4 1/2 tbsp. ketchup
1/2 c. vinegar
Lemon juice to taste (optional)
Cayenne pepper to taste (optional)
Horseradish to taste (optional)
Few dashes hot pepper sauce (Tabasco)
3 tbsp. chopped celery
3 tbsp. chopped green onion
3 tbsp. chopped green pepper
3 tbsp. chopped parsley

Mix all ingredients and store in refrigerator. It lasts indefinitely.