Homemade Additive-free Daishi Soy Sauce

• 1 4/5 large Soy sauce
• 200 ml Sake
• 200 grams Bonito flakes
• 40 grams Kombu
• 10 Dried shiitake mushrooms

1. Put the kombu in a food processor and process it until powdered.
2. Do the same with the dried shiitake mushrooms (make a large amount and keep it in stock for later use).
3. In a large container, combine the soy sauce, sake, and bonito flakes, put the kombu and shiitake powder in a paper tea filter, then let it sit in the soy sauce overnight.
4. After letting it sit overnight, bring it to boil on medium heat, then cool.
5. Store in the refrigerator after it cools.

soy sauce, sake, flakes, shiitake mushrooms

Taken from cookpad.com/us/recipes/147537-homemade-additive-free-daishi-soy-sauce (may not work)