Ingredients:

  • 3 cups Cold Water (Filtered water preferred)
  • 1/2 oz Dried Shiitake Mushrooms (14 g)
  • 4-inch strip Dried Kombu Seaweed (10 cm strip)
  • 1/2 cup Low-Sodium Tamari (or dark soy sauce, 120 ml)
  • 1 tsp Fine Sea Salt (5 g)
  • 2 Tbsp White Miso Paste (Shiro Miso, 30 ml)
  • 2 Tbsp Packed Light Brown Sugar (or coconut sugar, 30 g)
  • 1 Tbsp Apple Cider Vinegar (ACV, 15 ml)
  • Optional: 1/4 tsp Black Peppercorns, crushed

Instructions:

  1. Combine Umami Builders: In a medium saucepan, combine the cold water, dried shiitake mushrooms, kombu strip, and optional black peppercorns.
  2. Bring to Simmer: Place the pan over medium-high heat and bring the mixture just to a gentle simmer. Do not boil vigorously.
  3. Reduce Heat and Steep: Immediately reduce the heat to the lowest setting. Simmer gently, uncovered, for 25 to 30 minutes, allowing the liquid to reduce by roughly one-third to concentrate the flavor.
  4. Remove Aromatics: Remove the saucepan from the heat. Carefully remove and discard the kombu strip and shiitake mushrooms using a slotted spoon.
  5. Strain for Clarity: Place a fine-mesh sieve lined with cheesecloth (or paper towel) over a clean bowl. Slowly pour the liquid through the sieve to remove all fine sediments. Crucially, do not press or squeeze the solids, as this causes cloudiness.
  6. Return to Pan: Pour the clarified liquid back into the clean saucepan.
  7. Dissolve Seasoning Base: Add the Tamari (or soy sauce), brown sugar, and sea salt to the warm liquid. Stir continuously over low heat until the sugar and salt are completely dissolved.
  8. Incorporate Miso: Turn the heat off completely. Scoop the white miso paste into a small bowl and add a tablespoon of the warm sauce. Whisk until the miso is fully smooth and creamy (this prevents clumps).
  9. Stir Miso into Sauce: Pour the smoothed miso slurry back into the main saucepan and whisk until thoroughly combined.
  10. Add Acidity: Stir in the Apple Cider Vinegar.
  11. Final Taste Check: Taste the finished sauce. Adjust with a pinch more salt, sugar, or ACV as needed to achieve an intensely savory, balanced flavor.
  12. Cool and Bottle: Allow the sauce to cool completely to room temperature (at least 30 minutes). Transfer the cooled sauce into a clean, airtight bottle. Store in the refrigerator for up to 3–4 months.