Yes, I was thinking random meats and vegetables wouldn't be on the list of 15. That would be the part where I stop at the store to pick up a random meat and vegetable(s) to be cooked in the 15 ingredients.

It's probably not that hard. Like stir fry. You can stir fry just about anything together. Toss in some oyster sauce, some soy sauce and sesame oil with a bit of cornstarch, and you're good to go.