About ways to keep food warm in the staff cafeteria. Please elaborate thanks

You can use a heating table to heat the food, put the food in the trough, and there is a special heating table that can control the temperature. Both buffet and separate meals are available.

There is a dedicated thermal insulation facility. It is available in most fast food restaurants.

You can put the food tray in the trough, and the trough has hot water, and many places are heated like this.

You can install a special insulation equipment for catering, which is available in many restaurants.

Just keep warm with hot water!

Thermal insulation equipment to get one go.

It's very simple, before filling the pot for cooking, put it in the steamer to steam it, and then use a basin of the same volume to fill a small half basin of hot water. Put the rice bowl from the steamer into the basin with hot water, and then fill the meal. It's much cheaper than if you buy equipment again...

It requires specialized equipment, usually steam underneath or hot water for continuous heating.

With an exclusive holding furnace.