Use insulated food containers
Preheat thermoses or lunch boxes with hot water before filling
Keep lids tightly closed
Wrap containers in towels or insulated bags
Use thermal food carriers
Store food in an oven set to a low warm setting
Use a slow cooker on the warm setting
Use chafing dishes with heat sources
Cover food with foil to retain heat
Serve food on warmed plates
Keep food in smaller portions to reduce heat loss
Avoid opening containers repeatedly
Transport food in insulated delivery bags
Use heat packs designed for food transport
Keep food away from cold surfaces and drafts