Man, meat, fire. What could be more primal than the act of grilling a steak? For that, we turn to Richard H. Turner. He’s the co-owner of Turner & George, a rare breed meat merchant based in London, and the executive chef of Hawksmoor. In 2015, he took home the city prize for best steak. Get tips from Mr. Meatopia himself for everything from barbecuing to butchering bovines, buying quality cuts of beef and recipes in his newly published “PRIME: The Beef Cookbook.”