These sweet and sour meatballs are better than take-out and can be made in less than 30 minutes -- talk about a fast dinner! I like adding extra Sriracha to mine and topping with some cilantro, but it's totally optional. Quorn meatless meatballs are available in many of the grocery stores near me. If you can't find them, make these with frozen beef or pork meatballs for a non-vegetarian take on the recipe, or with another brand of vegetarian or vegan meatballs that you might prefer better or can find easier in your local stores. The sauce also works great with chicken or a chicken substitute, like Quorn chick'n products, which are vegan and I've used many times before.