3 chinese style spinach soup Recipes

dried shiitake mushrooms , soaked in hot water to soften oz, egg whites, egg, defatted chicken broth or vegetable broth, spinach, stems removed, washed and drained (or substitute frozen leaf spinach, thawed and drained), udon noodles, cooked , or 1/2 lb spaghetti, cooked and drained, reduced-sodium soy sauce or to taste, chinese chinkiang vinegar (or balsamic vinegar) or to taste, tabasco , to taste, firm chinese-style tofu cut into small cubes, freshly ground white pepper to taste

vegetable broth, water, soy sauce, rice vinegar or apple cider vinegar, oriental sesame oil, minced garlic, minced peeled fresh ginger, sliced mushrooms (about 5 oz), firm tofu , cut into 1/2-inch pieces, ready-to-use spinach leaves, green onions, chopped