Kelvin Lester, a floor supervisor at a meat processing company with his typical day's worth of food at his kitchen table in Grand Meadow, Minnesota. (From the book What I Eat: Around the World in 80 Diets.) The caloric value of his typical day's worth of food in June was 2,600 kcals. He is 44 years of age; 5 feet, 11 inches tall; and 195 pounds. The hands on the right belong to Kiara, his four-year-old adopted daughter. Several times a week, hamburger patties that he purchases with an employee discount wind up on his dinner table, and then go into his lunch box, along with his wife's homemade potato salad. With more than 20 years of experience grinding beef at the Rochester Meat Company, Kelvin says he always grills hamburgers?no matter who has ground them?until they are well-done, because any contamination is most easily rendered harmless by thorough cooking, meaning cooking them to an internal temperature of at least 160 degrees Fahrenheit. MODEL RELEASED.