If you're looking for a vegetarian version of Hong Kong-style sweet and sour chicken, you can use a food processor to create a meat-free alternative. Instead of chicken, you can use tofu or seitan as the main protein. Marinate the tofu or seitan in a mixture of soy sauce, ginger, and garlic for added flavor. The batter can be made with chickpea flour, cornstarch, and baking powder for a crispy coating. The sweet and sour sauce can be made with vegetable broth, pineapple juice, ketchup, vinegar, and sugar. Add in your favorite vegetables like bell peppers, onions, and pineapple chunks for a delicious vegetarian twist on this classic dish.