well from my experience ask for the tenderloin for the bbq! the best cut! Some butchers won't tell you about that cut because it is the best cut. You can ask for sausage links as opposed to patties. You can be specific like asking for stew meat. You can ask for the fat it is Still fat until it is rendered then it is lard. As far as them rendering it to lard I don't know you may want to ask them that.