Homemade Mentsuyu Noodle Sauce: 4x Concentrate

• 400 ml Soy sauce
• 400 ml Mirin
• 20 grams Thickly shaved bonito flakes
• 10 cm square Kombu
• 3 Dried shitake mushrooms

1. Combine all the ingredients, and leave for at least half a day or overnight.
2. Heat up over a low flame until just before it starts boiling.
3. Heat gently for 10 minutes, taking care not to let it boil.
4. Strain the liquid though a tightly wrung out coarsely undyed cloth, and store in a clean jar in the refrigerator.

soy sauce, mirin, shitake mushrooms

Taken from cookpad.com/us/recipes/171468-homemade-mentsuyu-noodle-sauce-4x-concentrate (may not work)