Hostess
In a Hostess Trolley or Buffet Server, the food is kept at a temperature such that it does not cook anymore, it is just kept hot without risk of drying out or spoiling.
You can keep most foods hot in a Hostess Trolley or Buffet Server for 2 hours or more, depending on the type of food. Some dishes, such as chilli, curry or casserole taste even better when kept for up to 4 hours.