Combine all ingredients in a bowl and stir until well blended.Refrigerate for at least 30 minutes before serving to allow the flavors to meld.Serve with seafood such as shrimp, oysters, or crab cakes.
Notes
Adjust the amount of mustard or lemon juice to taste if you prefer a spicier or more tangy flavor.For a thicker consistency, add a small amount of ketchup or reduce the tomato juice.This cocktail sauce can be stored in an airtight container in the fridge for up to a week.