Remove the stems from the shiitake, discard stems and slice the caps. Reserve the soaking water and use as part of the water measurement. Heat up the oil, and sauté the onions, garlic and mushrooms for 2 to 3 minutes. Add water, cover and simmer 5 to 7 minutes. Slowly, add the diluted kuzu, stirring constantly until translucent and thick. Reduce the flame to low and add the shoyu. Mix, cover and simmer 2 minutes. Remove from the flame and mix in the chives. Serve as you would any other gravy. Vegetable or fish stock may be substituted for water to create different flavors for various occasions.
Per serving - 26 calories, 1 g fat (20% calories from fat), 1 g protein, 4 g carbohydrate, 2 g fiber, 0 mg cholesterol, 135 mg sodium