Why Only 10% Of Beef Gets A USDA Prime Grading (And What Qualifies It) - Chowhound

YARUNIV Studio/Shutterstock If you're a steak lover who's been grocery shopping for a while, you might already know prime beef is considered the best quality beef. You've also probably noticed it's the most expensive (and maybe that's what led you to think it's the highest quality — though it is still important to understand different beef grades and what they mean). But what you may not realize is just how rare…