"Create a Jollibee-style Filipino meatball burger steak with onion gravy and rice. The user has prepared meatballs, beef stock, flour, soy sauce, brown sugar, basic seasoning, onions, and rice. No oyster sauce, no Worcestershire sauce, no onion powder. Make the gravy savory-sweet, glossy, and slightly thick, with lots of onion rings on top. Use imperial units and keep it close to the Jollibee burger steak style."