Tonkatsu Sauce (Katsu Sauce)
Tonkatsu Sauce recipe made instantly! Learn how to make Japan’s sweet, tangy katsu sauce with just 4 ingredients. Perfect for katsu dishes.
- Total time
- 5 min
- Active time
- 3 min
- Yield
1, 1 (¾ cup or 180 ml per serving)1, 1 (¾ cup or 180 ml per serving)
- Difficulty
- Medium
Ingredients and Constraints
Ingredients
Ingredient watchpoints1 watchpoint
Short requirements and tradeoffs to check while gathering ingredients; detailed source notes stay expandable.
Sugar
2 Tbsp sugar ((plus more, as needed; or substitute brown sugar))
The source row includes a form, size, temperature, preparation, or handling detail.
Details and source
Source: Tonkatsu Sauce とんかつソース
Additional ingredient notes
Ingredients for Tonkatsu Sauce
Worcestershire sauce – I use Lea & Perrins brand; use vegan Worcestershire sauce if needed sugar ketchup oyster sauce – for vegan/vegetarian or shellfish-free options, use Vegetarian Stir-Fry Sauce instead Find the printable recipe with mea
Ingredients US CUSTOMARY METRIC 1X 2X 3X
4½ Tbsp Worcestershire sauce (use vegan Worcestershire sauce for vegan/vegetarian) 2 Tbsp sugar (plus more, as needed; or substitute brown sugar) 5 Tbsp ketchup 2 Tbsp oyster sauce (use Lee Kum Kee Vegetarian Stir-Fry Sauce for vegan/vegeta
Notes
Variations Make it vegan.
Swap in vegan Worcestershire sauce and Lee Kum Kee Vegetarian Stir-Fry Sauce in place of the oyster sauce. Use certified gluten-free Worcestershire sauce and gluten-free oyster sauce.
Method Overview
Structured method notes that are separate from the step timeline.
How to Make Tonkatsu Sauce
Combine the ingredients.
Add Worcestershire sauce and sugar in a jar or small bowl and whisk until the sugar fully dissolves. Add the ketchup and oyster sauce, then whisk until smooth.
Variations
This recipe is flexible—here are some ideas to get you started.
Use vegan Worcestershire sauce and Lee Kum Kee Vegetarian Stir-Fry Sauce in place of the oyster sauce. Use certified gluten-free Worcestershire sauce and gluten-free oyster sauce.
How to Use My Tonkatsu Sauce Recipe
Although homemade tonkatsu sauce is delicious with much more than just tonkatsu, Here are some of my favorite ways to use it.
With fried dishes – Drizzle it over Tonkatsu, Chicken Katsu, or Japanese Croquettes. With baked versions – It’s delicious on Baked Tonkatsu, Baked Chicken Katsu, and Baked Croquette.
Source video
Source video
Method Timeline
Prep
ActivePrep
3 min
Prep time from the source recipe card.
Total
PassiveTotal
5 min
Total time from the source recipe card.
Step 1
Gather all the ingredients. Note: I included a bottle of Bull-Dog Tonkatsu Sauce in the photo, but it‘s not needed for this recipe.
Image detailsGather all the ingredients.Note: I included a bottle of Bull-Dog Tonkatsu Sauce in the photo, but it‘s not needed for this recipe.Just One Cookbook · Tonkatsu Sauce とんかつソースDev reference Inputs and tools2
Uses
- 4½ Tbsp Worcestershire sauce
- 2 Tbsp oyster sauce
Step 2
Combine 4½ Tbsp Worcestershire sauce and 2 Tbsp sugar in a jar or small bowl and whisk until the sugar dissolves.
Image detailsCombine 4½ Tbsp Worcestershire sauce and 2 Tbsp sugar in a jar or small bowl and whisk until the sugar dissolves.Just One Cookbook · Tonkatsu Sauce とんかつソースDev reference Visual cue
until the sugar dissolves.
Checks1
Visual cueInfoVisualuntil the sugar dissolves.
Expected state: until the sugar dissolves.
Inputs and tools1
Uses
- 2 Tbsp sugar ((plus more, as needed; or substitute brown sugar))
Why and source
This step has reviewed source-backed guidance.
- Source: Tonkatsu Sauce とんかつソース
Step 3
Add 5 Tbsp ketchup and 2 Tbsp oyster sauce and whisk until incorporated. Taste and adjust the seasoning. It's now ready to use. For a thicker sauce, refrigerate for at least 30 minutes before serving—it firms up noticeably as it chills. Nami's Tip: The sweetness of ketchup varies, so adjust the sugar to taste.
Image detailsAdd 5 Tbsp ketchup and 2 Tbsp oyster sauce and whisk until incorporated. Taste and adjust the seasoning. It's now ready to use. For a thicker sauce, refrigerate for at least 30 minutes before serving—it firms up noticeably as it chills.Nami's Tip: The sweetness of ketchup varies, so adjust the sugar to taste.Just One Cookbook · Tonkatsu Sauce とんかつソースDev reference Visual cue
until incorporated.
Checks3
Visual cueInfoVisualuntil incorporated.
Expected state: until incorporated.
TimingInfoTiming30 minutes
Target: 30 minute
Expected state: For a thicker sauce, refrigerate for at least 30 minutes before serving—it firms up noticeably as it chills.
ServiceMain recipeSource service instruction
Add 5 Tbsp ketchup and 2 Tbsp oyster sauce and whisk until incorporated. Taste and adjust the seasoning. It's now ready to use. For a thicker sauce, refrigerate for at least 30 minutes before serving—it firms up noticeably as it chills. Nami's Tip: The sweetness of ketchup varies, so adjust the sugar to taste.
Inputs and tools1
Uses
- 5 Tbsp ketchup
Why and source
This step has reviewed source-backed guidance.
- Source: Tonkatsu Sauce とんかつソース
Step 4
Use as an ingredient in Japanese Hamburger Steak (Hambagu), Keema Curry, and Meat Doria (Rice Gratin) or drizzle on fried foods like Tonkatsu, Chicken Katsu, and Korokke (Potato and Meat Croquette) and their baked versions Baked Tonkatsu, Baked Chicken Katsu, and Baked Croquette.
Step 5
Store in an airtight container and keep in the refrigerator for up to 2–3 weeks or freezer for up to 3–4 months. Thaw completely in the refrigerator before using.
Handling and Storage
Reviewed hold, storage, make-ahead, and service-timing guidance.
Recipe Highlights
I always keep a jar of this sauce in my fridge.
My Tonkatsu Sauce Recipe is one of the easiest condiments I make from scratch—just four ingredients and one bowl. It captures that signature sweet-tangy-savory flavor of the bottled version.
Nami’s Recipe Tips
Keep these tips in mind for the best results.
Use a good Worcestershire sauce – I usually use Lea & Perrins, but any brand will work. Taste before serving – Ketchup brands vary in sweetness, so adjust with more sugar or Worcestershire if needed.
Storage Tips
To store: Store the leftover sauce in an airtight container in the refrigerator for up to 2–3 weeks or in the freezer for up to 3–4 months.
If frozen, thaw it completely in the refrigerator before using.
Learn More
Extra cooking notes, tests, and source details kept out of the step-by-step method.
Why this works
Quick kitchen reasons behind the main choices.
What does tonkatsu sauce taste like?
It’s rich and glossy with a sweet, tangy, and savory flavor—similar to a thick Japanese-style Worcestershire sauce with layers of fruitiness and umami.
The balanced acidity makes it especially good with panko-breaded and fried foods.
Article photos
Photos used with the article notes.
Source: Tonkatsu Sauce とんかつソース
Recipe structure
Components and intermediate outputs created by the method.
Main recipe
Recipe card ingredients and steps.
1, 1 (¾ cup or 180 ml per serving)
Sauce
Source step 1 creates or uses sauce.
Extra useful notes
Short source-backed recommendations and facts that do not need a step.
Make it vegan. Swap in vegan Worcestershire sauce and Lee Kum Kee Vegetarian Stir-Fry Sauce in place of the oyster sauce.
Make it vegan. Swap in vegan Worcestershire sauce and Lee Kum Kee Vegetarian Stir-Fry Sauce in place of the oyster sauce.
Make it gluten-free. Use certified gluten-free Worcestershire sauce and gluten-free oyster sauce.
Make it gluten-free. Use certified gluten-free Worcestershire sauce and gluten-free oyster sauce.
Use brown sugar. Brown sugar adds a deeper, molasses-forward sweetness that pairs well with the fruity notes in the sauce.
Use brown sugar. Brown sugar adds a deeper, molasses-forward sweetness that pairs well with the fruity notes in the sauce.
Add aromatics. For extra depth, whisk in ½ tablespoon of freshly minced garlic or ginger.
Add aromatics. For extra depth, whisk in ½ tablespoon of freshly minced garlic or ginger.
Add dry spices. Whisk in ¼ teaspoon of garlic powder, onion powder, or ginger powder for added complexity.
Add dry spices. Whisk in ¼ teaspoon of garlic powder, onion powder, or ginger powder for added complexity.
Recipe Utilities
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Source and Origin
Origin declaration
Adapted from source
Imported from the just-one-cookbook page for dev review.
Copy risk: Unchecked
Tonkatsu Sauce とんかつソース
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