Grill the PERFECT Grass-Fed Hamburger (Step 6 - last but not least)

One difference between Grass-Fed Beef and grain-fed, when it comes to cooking it: Keep in mind, and tell your guests, since Grass-Fed cows are more active, they have more myoglobin (red proteins that store oxygen in their muscle tissues, their meat), causing the beef to stay pink for a longer time than in grain-fed beef.

Want to really 'jazz' your burger up? Check this out.