Speaking of dirt, we had 2 steaks done Caveman style over the weekend. We used to do this when we were out in the bush in South Africa, but it lost its appeal in wet south west london with steak cost 3x more. However, if you are going to do it, make sure you get thick cut.
A nice article if you are brave enough to try - Add some dirt, get some flavour
http://www.bonappetit.com/recipes/2010/07/caveman_porterhouses_with_poblano_pan_fry