What are the best ways or appliances that keep food warm for a long time????!
Answers: like foil or tupperware??
not foil or tupperware...
If you have an electric griddle or skillet for things like burgers, sausages, even bread.
I have used an electric heating pad under many things from casseroles to platters of bread and rolls.
Crock pot for liquidy things like cheese dips and soups, casseroles.
I cater so I use chaffers large metal pans with sterno flames underneath. You could even sub for that by putting a rigging up two pans, upper with food, lower one with water in it and putting on an improvised riser of say a plant holder with a candle underneath to keep the water hot.
Using your noggin creativly and what you have on hand you should have no trouble keeping your food hot! Good luck
a crockpot or slow cooker