Argentinean-Style Meatloaf with Chimichurri

Argentineans are known for their passion for beef, and they love to grill it outdoors. They often serve grilled meats with a thick parsley sauce called chimichurri. My meatloaf is baked, but chimichurri is still a good match. Grinding your own meat means you know exactly what cut you are using: you can control the fat percentage and guarantee the freshness. Unlike for the burgers, the meat for this meatloaf is only ground once. What to s