Tonkatsu sauce, also known as katsu sauce, is a thick, rich, sweet-savory Japanese condiment traditionally served with breaded and fried dishes like pork cutlets (tonkatsu) and chicken katsu. It has a deep brown color, a smooth texture, and a flavor that combines sweetness, tanginess, umami, and a slight smoky note.
This 3-ingredient version is a quick homemade alternative to store-bought tonkatsu sauce. It uses simple ingredients found in most kitchens and takes less than two minutes to prepare. The result is a flavorful sauce that tastes close to authentic Japanese katsu sauce while being customizable to your personal preference.
Ingredients
Main Ingredients (3 Ingredients Only):
- ¼ cup ketchup
- 2½ tablespoons Worcestershire sauce
- 1 tablespoon soy sauce
Optional Ingredients (for extra flavor):
- ½ tablespoon sugar (for added sweetness)
- A pinch of garlic powder
- A pinch of onion powder
Step-By-Step Instructions
- Add the ketchup, Worcestershire sauce, and soy sauce into a small bowl.
- Mix everything thoroughly with a spoon or small whisk until the sauce is smooth and fully combined.
- Taste the sauce. If you prefer it sweeter, stir in a small amount of sugar until it matches your taste.
- For more depth of flavor, add a pinch of garlic powder or onion powder and mix again.
- Your tonkatsu sauce is ready to serve immediately.
Why This Recipe Works
This recipe works because each ingredient plays an important role:
- Ketchup provides sweetness and a mild tomato base.
- Worcestershire sauce adds tanginess, umami, and complexity.
- Soy sauce balances everything with saltiness and depth.
Together, these three ingredients create a well-balanced sauce that mimics the taste of traditional Japanese tonkatsu sauce.
How to Use Tonkatsu Sauce
This sauce is incredibly versatile and can be used in many different ways:
- Drizzled over tonkatsu or chicken katsu
- Used as a dipping sauce for fried shrimp or fish
- Served with croquettes or tempura
- Added to burgers and sandwiches
- Used as a sauce for fries or roasted potatoes
- Topped over rice dishes or omelets
It adds an instant boost of flavor to both Japanese and non-Japanese meals.
Storage Tips
Store your homemade tonkatsu sauce in a clean, airtight container or jar in the refrigerator.
It will stay fresh for up to 2 weeks when properly stored.
Always stir it before using, as some separation may occur.
Adjustments and Variations
- If you want a sweeter sauce, add more sugar gradually.
- For a tangier flavor, increase the Worcestershire sauce slightly.
- For a saltier flavor, adjust the soy sauce.
- To make it vegetarian or vegan, use a vegan Worcestershire sauce.
Final Thoughts
This 3-ingredient tonkatsu sauce is a perfect example of how simple ingredients can create amazing flavor. It’s quick, affordable, and incredibly versatile — ideal for busy home cooks or anyone who loves Japanese food.