Beef serving sizes in restaurants are often so humongous they could feed a family of four. One serving is three ounces of meat. If you can visualize a deck of cards, that's approximately the size of a three-ounce beef or pork serving. The six leanest beef cuts per three-ounce cooked, trimmed serving are tenderloin, top loin, top sirloin, round tip, eye round and top round. Beef is a good source of iron, zinc, vitamin B-12, other B vitamins and protein.
Pork is also high in iron and is especially rich in thiamin and the B vitamins.
Get into the habit of shopping for your protein perishables last, so they spend less time going from the refrigerator case to your refrigerator. In Phoenix summers, you should keep a cooler in your car to transport meats, milk and other perishable food items. Frozen foods can keep other foods cooler. Ground beef exposed to air is bright red. Ground beef that has turned gray or brown may have handling or age problems.