The nickname referred to when the Germans starving from lack of rations, would scavenge destroyed Sherman tanks for the precious cooked meat inside. In fact, the designers of the Sherman designed it to light every time, so that cooking of the crews was guaranteed. Of course, the Germans would often eat the allied tank crews whether they were cooked or not, regardless. My grandpappy told me this in great detail when I was a young boy. Truly the horrors of war. I can’t believe that over 20 million Americans would burn to death in these metal coffins over the course of WW2.