Tonkatsu sauce

• 1/2 cup Worcestershire sauce
• 1/4 cup sugar
• 1/4 cup shoyu (soy sauce)
• 1/4 cup tomato ketchup
• 1 tablespoon smooth French mustard
• 1/4 teaspoon ground allspice

1. In a small saucepan, combine the Worcestershire sauce, sugar, shoyu, and ketchup.
2. Cook the mixture over low heat, stirring, until the volume is reduced by 20 percent.
3. Add the mustard and allspice, stirring.
4. Remove the pan from the heat, and let the sauce cool to room temperature.
5. The sauce will keep for one week, refrigerated in a sterilized bottle with a tight-fitting lid.

worcestershire sauce, sugar, shoyu, tomato ketchup, ground allspice

Taken from www.cookstr.com/recipes/tonkatsu-sauce (may not work)