How big a beef roast do I need to buy to feed 20 people?
This varies depending on whether you are carving yourself or serving buffet style. For party size entree servings that YOU serve, typically, you can plan for 1/2 pound boneless uncooked roast per person, which gives 6 ounces cooked meat per person. For self service, you must allow 10 ounces per person. For bone in standing rib roast, allow 1 full pound per person for party-size servings. Thus, for 20 people, you would need 20 pounds, or two to three roasts. Note: The USDA’s food guide pyramid recommended serving sizes are 3 ounces cooked meat or 4 ounces uncooked. However, expect your guests to eat more than this “average serving” at party or holiday meals. For receptions or “come and go” cocktail parties, you need about 1/2 what you would want for a sit down meal. For pot roast with vegetables or pulled beef sandwiches, you can allow 6 ounces raw boneless beef per person.
