Mushroom and leek dumplings are a savory and aromatic option for veggie dumpling enthusiasts. The filling is made from sautéed mushrooms, leeks, garlic, and a touch of soy sauce. The combination of earthy mushrooms and fragrant leeks creates a flavorful filling that pairs well with the dumpling wrappers. These dumplings can be steamed or pan-fried, depending on your preference. Serve them with a tangy dipping sauce made from soy sauce, rice vinegar, and a sprinkle of green onions.