Ritter PSP foil pot.

I took a piece of HD aluminum foil that was 18” x 18”. I wanted to see how I could use the Ritter PSP aluminum foil to boil water. I folded it twice. This made it have four layers. I made it into a square box. I folded the four sides up about half way to make creases. I pulled up the sides and let the corners stick out. I then rolled the foil sticking out on the corners. This made a strong, leak proof container. I then put it over an Esbit stove and boiled water in it.

Anybody have a better solution?

Thanks!