Japchae (Stir-fried Glass Noodles with Vegetables)

Rehydrate the dried shiitake mushrooms in warm water for 20 minutes. Once soft, squeeze out excess water, remove stems, and thinly slice the caps. Blanch the fresh spinach in boiling water for 30 seconds, then immediately transfer to ice water. Squeeze out all excess water. In a bowl, season the spinach with a pinch of soy sauce, 1/2 tbsp of sesame oil, and half of the minced garlic.