Another option for a cozy is to take a foil pouch ... one large enough for you to slip your pot into.

I took a foil pouch on my last trip, mainly to keep biscuits and fry bread warm while the rest of the meal was still cooking.  (Actually, I finished cooking the fry bread and then started the walleye fillets.)  It got rinsed and re-used several times during that trip.

And the price for the foil pouch was right ... I re-purposed one that sweetner comes in that is resealable.  This also means that I can dispose of it after the trip because I should have a new one available before the next trip.  (But, you can also buy them commercially if you don't use that kind of product.)  I also have one that is probably 2 gallons, but that seemed a little excessive for my last trip ... darn Home Grocer went belly up a few years back and they didn't' return to pick up the last cold foods delivery bag (complete with a couple of gel cold packs).  I'm thinking this bag (less the gel packs) might see a trip in the not too distant future when I take more foods that need to remain cool for a few days.

dd