You can get titanium in 400 ml size for $19 (Evernew), but would have to find a cheap lid for it. The cookpot he is using may simply be from the grocery store. At first I thought it might be a sterno can, but those cans sides are not very rigid. Some meat cans and the bean dip can are nearly that size. It looks like all he is using the cookpot for is heating water, so the bean dip can is $2 at Walmart. Use a foil top.