Trim all the arteries, valves, excess fat and gristle off the beef heart if it has not already been done for you. **I recommend buying it trimmed to save time and effort
Slice the heart into 1-1 ½" slices.
Season the heart and let it sit, uncovered, in the fridge for 8 hours or overnight.
Heat a skillet over medium high heat and add the ghee. (can also be grilled on high heat, just brush with ghee).
Place the beef heart steaks in and sear on each side for about 2-3 minutes, depending on thickness.
Remove and let sit 5 minutes. Serve with chimichurri or a gremolata.
Notes
Buying the beef heart pre-trimmed by your butcher will save you some time and effort.
Salting it overnight helps to add flavor and moisture to the meat.
Cut the heart in 1-½ inch pieces for the best results.
Beef heart is best cooked rare to medium rare. Any longer and it can start to get tough.
They can be cooked on the grill instead of the skillet if you prefer. Same amount of time and temperature.