The lid is large enough to heat water for a cup of coffee or instant soup, but can certainly be used as a frying pan. Flashover flames but can then scorch the coating on the folding handles. In large mug itself is space for cooking for a sufficient amount of pasta, couscous or lenses.
One filling with 50 ml of alcohol is enough for about 30 min burning time.
The warning "is not suitable for complex menus" I think over carefully. With some organizational skills a full menu for one person is possible. My Menu of the day: bags-soup in cups, small sausage coil with darübergeschlagenem egg into the pan and fresh green green beans and mashed potato bags in the cup. Has even made me sick wolverine.
A star's less that it is tricky to place the (inverted) screw cap for extinguishing the flame on the burner.