I think the US making ice cream in their airplanes were the best example of this. Not sure of which model of craft, but they were essentially able to fly milk

I think the US making ice cream in their airplanes were the best example of this. Not sure of which model of craft, but they were essentially able to fly milk to a high enough altitude it turned into ice cream. The ability to have been able to spare aircraft for the sole purpose of doing that said a lot.