He's using a Swedish trangia, lots of us have experience with them here.

Simple, reliable, robust- you have to work at it to screw this thing up. They run best on ethanol, but you can run methanol (burns fine- just a little poisonous), or if you get REALLY desperate, isopropyl (burns dirty, not very hot). But like all alcohol stoves, it can be quirky a low temperatures due to the relatively high vaporization temp of the fuel compared to other systems.

Search that archives for "trangia", you'll find a few hundred posts. Since mid-summer.