Shanghai Noodles

Name: Shanghai Noodles
Ingredients: 6 dried shiitake mushrooms; 16 ounces fresh udon noodles or Shanghai-style noodles (or 8 ounces dried); 1 tablespoon avocado oil; 1 tsp garlic, minced; 1 teaspoon ginger, minced; 2 scallions, white and green parts separated and thinly sliced; 1 pound Shanghai bok choy or baby bok choy, leaves and stems chopped into long thin strips; 1 medium carrot, peeled and julienned; 1 1/2 tablespoons soy sauce; 2 tablespoons water; 1 1/2 tablespoons hoisin sauce; 1/2 tablespoon chili sauce; 1/2 tablespoon sesame oil, to taste