@Requiem Agree with your Point and Fully Understand it, You can make it in a way like lets say the person whom made the food while on Duty still, Gets a tip as well like the person taking the order or Completing it, when a sandwich of which he made is sold, and it only works when he is actually still on the shift, so when he leaves it does not count anymore.
or it can be an hourly bonus added to their salary which they Receive, for example when they cook, they can simply instead of a 900 Dollars made each hour, can make 1k or something extra, it really does not need to be a lot more, as long as its a bit more and feels that they are getting paid for their work it will be enough.
The thing about it is, Cooking is simple but has a bit of work to it and orders usually take a long time to be filled so it wont be possible for them to abuse it, since ive been working with my gf at burger shot for a long time and usually people are to tired or lazy to cook and prepare sandwiches no disrespect to anyone its just because it has no interaction with others and you can make way more selling and completing, so people don't really like to be in the back, a simple extra money to the salary or the first suggestion would be really good.
if I come up with any other point or some other method ill also mention it here, let me know how do you feel about these two methods.
ty for the response as well