Tonkatsu Sauce Recipe

Step 1

Heat the oil in a large saucepan to medium heat.

Step 2

Add the onion and cook for 5 minutes to soften.

Step 3

Add the apple, tomatoes, garlic, sake, water, salt, sugar, soy sauce, vinegar, tomato paste and bay leaf. Bring to a boil, then reduce heat and simmer for 30 minutes.

Step 4

Discard the bay leaf, then allow the mixture to cool.

Step 5

Transfer the ingredients to a food processor or blender and process until smooth. Or, use a stick blender.

Step 6

Strain the ingredients back into the saucepan and discard the solids.

Step 7

Add the seasonings and Worcestershire sauce. Heat and simmer for 10 minutes.

Step 8

Cool and serve.

Step 9

Whisk together the ketchup, Worcestershire sauce, sugar and soy sauce in a small bowl.

Step 10

Serve as desired.