My son takes a lunch to work with him every day, he has to leave the house at 6 in the morning, so I pack this for him in the evening. It’s in a insulated cold box and put in the fridge over night. In the morning he takes it out and adds a freezer block. The trouble is, his car is on the drive, and he says the last few days it’s been hot even at that time, he soon gets the air con going to cool it. When he gets to work his box sits on the side in the tea room, he works in a hot factory so the tea room is the coolest place, even so it sits there from 7am to 12.30 and even with a freezer block he says its warm enough to melt a chocolate biscuit. I try to pack something interesting not just sandwiches, today he has a pasta salad, cereal bar, apple, grapes, and a slice of lemon cake. But in this heat I’m worried about the safety of things like mayonnaise or rice, a sweaty cheese sandwich just sounds horrid.
Sorry for the long message, but I wanted to give all the facts. Any ideas/ advice would be very much appreciated.