Both DTape and PaddyCrow are right....denatured burns hotter and a stainless bowl tends to draft the flame up the sides and away from where you want it.
My pot (the one in the picture) is in fact, stainless, but very thin metal, wide, and shallow. Being wide it captures heat well, and not much flame licks up the sides.
I found it in a Walmart "stainless cook kit". Kept the pot, use the rest for car camping.
I've boiled plenty of water with that stove, as well as cooked eggs, and even fried potatoes in olive oil. It works about like Esbit.