Mushroom and Leek Spring Rolls

Name: Mushroom and Leek Spring Rolls
Ingredients: 2 cups sliced shiitake mushrooms; 1 cup sliced button mushrooms; 1 cup sliced cepes, chanterelles or oyster mushrooms (optional); 2 cups leek julienned; 1 cup bean sprouts; 1/2 cup hoisin sauce; 2 minced serrano chile; 1 tablespoon minced garlic; 1 tablespoon minced ginger; 2 tablespoons canola oil; 1 cup chopped scallions; 1/2 cup chopped cilantro; 1 (4 ounce) package bean thread (rice vermicelli), blanched, refreshed and cut up; Salt and black pepper to taste; 1 package lumpia wrappers. Other types are egg roll and spring roll wrappers. I prefer lumpia.; Eggwash (1 egg and 1/2 cup of water); 1/4 cup fresh mint chiffonade; 1 teaspoon sugar; 1/4 cup thin soy sauce; Juice of 1 lemon