One of the most lucrative endorsements ever signed by any sportsman was not for some shoe, line of clothing, or athletic gear- but for a cooking item- The George Foreman Lean Mean Fat-Reducing Grilling Machine. In fact, the deal is generally thought to have made the former boxing great drastically more money than he ever made fighting in the ring. Boehm, a lifelong inventor and tinkerer, rushed home and sketched an idea for a grill that did exactly that, as well as drained fat away while the item cooked. To test the concept, Boehm bought some cast iron skillets, placed them at an angle and then tried cooking burgers on the contraption, measuring how much of the fat was drained away. The crude device worked and Boehm refined the idea, adding such features as a floating hinge so that it could evenly cook things of varying size and foran separate reservoir that the fat would drain mucch, making cleaning the grill that much easier. As Boehm later elaborated:.