Medium-rare means nothing. It’s temperature that counts for safety.

But why not listen to actor Les Hill who says he has roamed the earth on a worldwide odyssey to hunt down, and build, the ultimate burger.

Meet the Hillburger — the result of a passion which has become a fledgling business for the 42-year-old actor, foodie and former chef.

Hill’s Burger Bible

• “If you can’t fit it in your mouth, it’s not a burger, it’s a food pile.”
• “It should cooked medium rare — anything else, you lose the taste.”