Tonkatsu / Katsu Sauce

Ingredients

1 cup ketchup
4 teaspoons dry mustard powder
1 1/2 teaspoons garlic powder
1 1/2 teaspoons ground black pepper
3 tablespoons Worcestershire sauce

Directions

In a small bowl, stir together the ketchup, mustard powder, garlic powder, pepper, and Worcestershire sauce. Cover and refrigerate for at least 1 hour to blend the flavors before serving.