If you're planning to throw a Thanksgiving feast for a crowd, here's how to prevent food waste when you're not sure how much to cook. First, the facts: About 28 billion pounds of perfectly good food is thrown away every year. To prevent waste and help reduce that number, use these approximate portion sizes per person for Thanksgiving. Expect to serve 1 pound of turkey per person, along with 1/4 pound veggies, a few tablespoons of cranberry sauce, 1/4 pound stuffing and 1/8 of a 9-inch pie per person. Have reusable containers ready for leftovers so you can reduce your meal waste to zero.