Marcus Dirr (left), a master butcher, makes sausages at his shop in Endingen, near Freiburg im Breisgau, Germany, while his father Peter Dirr, a chief butcher, operates the controls of a mixer. (From the book What I Eat: Around the World in 80 Diets.) The caloric value of his typical day's worth of food in March was 4600 kcals. He is 43 years of age; 5 feet, 9 inches tall; and 160 pounds. The Dirrs know the farmers who supply their animals, and in fact hand choose the animals and watch them grow. MODEL RELEASED.