Low Carb Tonkatsu Sauce

This sweet, savory and tangy low carb tonkatsu sauce takes all your Japanese deep-fried dishes to the next level!  Using only a few ingredients, this simple and easy Japanese staple is a sauce worth making for all your deep-fried favorites!

Low carb tonkatsu sauce being poured over a bed of cabbage

In my opinion, the hard thing about being keto or low carb is that many sauces are always off-limits due to their high sugar content.

But never in a million years would I ever imagine having tonkatsu pork cutlet without tonkatsu sauce… am I right?

This is why I have made it my low carb keto mission to make as many sauces, low carb friendly as I can, just like this Japanese classic tonkatsu sauce!

Just a note, for this tonkatsu sauce to taste authentic, I did use oyster sauce that contains sugar, so use it at your own discretion depending on your diet plan.  You can leave it out if your strict keto, but it will alter the taste of the sauce.

Low carb tonkatsu sauce served in a glass bowl

What is tonkatsu sauce?

Traditionally, tonkatsu sauce is made up of many ingredients including sugar, vinegar, tomato paste, apple puree, carrots, onions, lemon juice and spices.  It’s sold in a bottle at most Japanese markets and served with all kinds of deep fried foods.

Ingredients for low carb tonkatsu sauce inside a glass mixing bowl

How do you make tonkatsu sauce low carb?

As mentioned above for this recipe, I did use a small amount of oyster sauce, which does contain sugar but to limit the carbs for the rest of the sauce, I used sugar-free ketchup and monkfruit.

How long does tonkatsu sauce last in the fridge?

If kept in an air tight container, the sauce should last numerous months in the refrigerator.

Low carb tonkatsu sauce being squeezed over keto tonkatsu

What to serve with tonkatsu sauce?

Tonkatsu sauce goes well with deep-fried dishes such as deep-fried pork cutlets, deep-fried chicken, deep-fried shrimp, deep fried tofu or even just on a bed of cabbage.

For this one, the special ingredients you will need are Sugar Free Ketchup, Oyster Sauce, Worcestershire Sauce and Monkfruit.  All can be purchased on Amazon or local supermarket.

Now, let’s get mixing some low carb tonkatsu sauce!

Prepping Time 1M

Total Time 1M

Net Carb/Serv ~2g

Servings 6

Ingredients

Directions

1) Gather all the ingredients.

2) In a small mixing bowl, combine Sugar Free Ketchup, Worcestershire Sauce, Oyster Sauce and Swerve/Monkfruit.  Mix well and then transfer to a squeeze bottle for easier use.

Hope you enjoy your low-carb tonkatsu sauce!

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Low Carb Tonkatsu Sauce in a white pouring jar

 

Low Carb Tonkatsu Sauce in a glass bowl

Low Carb Tonkatsu Sauce

This sweet, savory and tangy low carb tonkatsu sauce takes all your Japanese deep-fried dishes to the next level! Using only a few ingredients, this simple and easy Japanese staple is a sauce worth making for all your deep-fried favorites!
5 from 2 votes
Course: Sauce
Cuisine: Japanese
Keyword: keto japanese sauce, keto tonkatsu sauce, low carb tonkatsu sauce
Prep Time: 1 minute
Total Time: 1 minute
Servings: 6
Print Recipe
Calories: 16kcal

Ingredients

  • 4 tbsp Sugar Free Ketchup
  • 3 tbsp Worcestershire Sauce
  • 1 1/2 tbsp Oyster Sauce
  • 2 tsp Monkfruit or sweetener of choice

Instructions

  • Gather all the ingredients.
  • In a small mixing bowl, combine Sugar Free Ketchup, Worcestershire Sauce, Oyster Sauce and Swerve/Monkfruit. Mix well and then transfer to a squeeze bottle for easier use.

Video

Nutrition

Calories: 16kcal | Carbohydrates: 3g | Protein: 1g | Fat: 1g | Saturated Fat: 1g | Sodium: 381mg | Potassium: 71mg | Fiber: 1g | Sugar: 2g | Vitamin A: 7IU | Vitamin C: 1mg | Calcium: 11mg | Iron: 1mg

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