Ds1 goes on his first overnight trip with school tomorrow. They are walking a section of the Gritstone Trail in Cheshire tomorrow and he has to take a packed lunch in a backpack. It's to be in a disposable bag so I can't put an ice pack in as I do with his school packed lunch.
If I freeze a carton of orange juice and put it in, will it be OK? It won't split the seam and start leaking in his bag? Or shall I freeze his sandwiches (hate the thought of him tucking into frozen sandwiches ) I was thinking if I got the juice out when I get up tomorrow (around 6) it will have bags of time to defrost before lunchtime.
Or shall I just give him cheese butties and accept they'll be warm and limp by lunchtime?