In this video, we make ground beef meatballs with onion and bread crumbs. The meatballs are first browned and then simmer until tender in the sweet-and-sour sauce. The sauce couldn't be any easier - just a combination of brown sugar, a little bit of flour, soy sauce, water, and distilled white vinegar. Get the recipe for The Best Sweet and Sour Meatballs. Hungry for more meatballs?