The beef I used was from a milk breed of cattle. Btw. over 90% of our beef comes from milk cows, it's tough to buy anything better than that; for angus beef etc. you have to go online. When I was in UK, the simple 21 day aged beef sirloin from tesco was much better than anything Iv'e had here (and I've supposedly had the best home product). Regarding the pork, aren't you afraid of trichinella? Here we are paranoid about it and are taught to basically overcook it.