Ingredients:

  • 1/2 cup low-sodium soy sauce
  • 1/4 cup mirin
  • 1 tbsp granulated sugar
  • 1 tsp rice vinegar

Instructions:

  1. Combine the soy sauce, mirin, sugar, and rice vinegar in your saucepan. Whisk vigorously while the liquids are still cold to ensure the sugar is evenly distributed.
  2. Place the pan over medium-low heat. Bring the mixture to a very gentle simmer with tiny bubbles breaking the surface for 10–15 minutes until it reaches a syrupy, mahogany-colored consistency.
  3. Remove the pan from the heat once the sauce coats the back of a spoon. Transfer the liquid to a glass jar and let it cool to room temperature before sealing.