Here. I'll show you.

[Oda helps himself into the kitchen, expecting Sakura to follow. He even thought to bring a little pan with him to reheat the curry, assuming someone who doesn't know how to cook might simply not have one.

[He sets it on one of the burners, then turns to Sakura.]

This dial controls how much heat comes out. The farther you turn it, the higher the heat.

For reheating already cooked food, we'll just put it about halfway.