Name: Vegetarian Potstickers
Ingredients: 1 (10 oz.) package firm tofu; ½ onion, roughly chopped; 1-inch piece of ginger, peeled and roughly chopped; 3 cloves garlic; 1 (3.5 oz) package shiitake mushrooms, stems removed; 1 carrot, cut into 1-inch pieces; 1 stalk celery, cut into 1-inch pieces; 2 cups napa cabbage, roughly chopped; 1 cup bean sprouts, chopped; 3 tsp. sesame oil; 6 Tbsp. less sodium soy sauce, divided; Salt, to taste; Black pepper, to taste; 2 packages wonton wrappers; Vegetable oil; Water; 2 Tbsp. rice vinegar; 1 clove garlic, minced; 1 tsp. red pepper flakes, optional