HEB (supermarket) has both the IMUSA and the Vasconia tamale steamer pots, for building a mini-WSM using a Weber Smokey Joe Silver or Gold. I saw them last Saturday sitting on the top of the cooler cabinet that contains bacon and sausage and tons of other things. The IMUSA was marked $19.97 and the Vasconia was marked $29.97. The IMUSA is aluminum. I think the Vasconia is steel, probably stainless but I didn't look to be certain.