I bought one of these yesterday.... and it is all Ree Drummond's fault! She posted a recipe for home-made tortillas on her website, and I have the feeling that I could well do it! Anyway, I have never owned any lard and I am not sure what in the world I would do with it other than make these tortillas. ( I did not buy 25 lbs either - just a small tub).
I'll post some pictures of the process and the outcome. It surely should be interesting because she said there is a certain learning curve to it!