Wonderbag Slow Cooker without Electricity

I was surfing around looking at #crockpot stuff, and I ran across the #Wonderbag, a NON-electric portable slow cooker. Basically you put your own pot in there. The concept totally fascinates me, how do they do that?!? It seems like crockpot witchery. In the reivews, people are talking about making soups and casseroles and yogurt […]