The Raquel Welch of protein sources

"Grass-fed beef
The Raquel Welch of protein sources – the original and the best. Ignore grain-reared beasts: the fatty acids in grass-fed beef are of the healthier omega-3 variety and also contain conjugated linoleic acid (CLA), which reduces body fat and builds lean muscle. Don’t order it too well done though: 'Charring is carcinogenic,' says Bowerman. 'Roasting or pan searing is much better.' Do have a cow, just don’t grill it."
(Jan. 8, 2009, Men's Health)