CommanderX, glad to hear you enjoyed the burger making mechanic! If you want to continue serving customers, you can choose not to take the trash out. The "customers" will keep coming endlessly! Perhaps in the future, if we have enough interest, we'll make a full-on restaurant sim.
Edit: Jon here, I was actually wrong. You can't just serve customers endlessly. Kaleb took it upon himself to patch this in, though, so now the above statement has been both incorrect and correct.
Cheers,
Scythe Dev Team