Quorn. Sadly not available in France
I contacted the manufacturers a couple of years ago. Quorn was tried on the French market a few years back, and it didn't sell well. I am vegetarian and follow SW when I need to lose a couple of kilos. It always works for me, although I should know better than to let the grams creep on. I like and need Quorn for my prolonged stay in Creuse.
I have bought two deluxe boxes from my local JB Packaging in Brixham, they supply boxes to the fish and frozen food industry and with some chill packs in the box, chilled or frozen should stay cold or frozen as long as the box isn't open. They are very helpful.
I intend to try chilled only this spring, and will see how it works, freezing anything which seems to still be chilled enough on arrival after about 36 hours in the boot, when the air temperature should be low. A thermometer in the box should complete the experiment. I can also fit one of their 1.5 kilo boxes in my carry on luggage when I take a short trip across, and airport security assure me there will be no problems with a poly box inside my luggage.
I would rather do all this, as it's my own responsibility and I know how long it has been stored in the chill box and if anything untoward happened. It will be worth it if it works. Sounds complex, but really it's not. On verra.