I've experienced lots of limp-chip scenario in delivered food. I find it's worst with American McDonalds-style french fries - they're very thin, and steam them

I've experienced lots of limp-chip scenario in delivered food. I find it's worst with American McDonalds-style french fries - they're very thin, and steam themselves into a soggy mess very quickly, pretty much no-matter what happens. Australian/English style chips seem to have a better longevity if they're cooked properly (double-fried, and a more developed golden colour than pale/white). The best chips for delivery are battered (light tempura style), although it's rare to find them. They remain crisp and crunchy even long after they've gotten cold. Packaging is also a serious concern, too - plastics are right out, as steam will be trapped and condense on them much more rapidly - even if the packaging isn't closed tightly. Paper or cardboard are best. Foil can be okay as a backup option for a short period, if it's kept hot.