@@InsideAgameR the patties actually don’t get cold. Unless they changed that mechanic, only the drinks and ice cream start to change temps over time. The fries will also stay warm if left on the warmer
Found it helpful to precook about 2 trays of burgers before you open. Make sure ketchup and fixing put away in the fridge and I stout a burger on each bun to start. Adding an extra patty when they need a double. They really need to give the customers more patience or time it's too short at the moment in game. I can only imagine how much more this will get worse when they add cleaning to the game.
It's a fast food restaurant. You're supposed to cook all your burgers before you open, and then it's just a matter of grabbing what they ordered and serving it up.