There is no need to soak the heart. Remove hard arteries or connective tissue with a knife. Lamb or goat hearts can be served whole. For a beef heart, cut lengthwise to open it.
Should you soak beef heart?
You'll want to cut away the fat, membranes, valves, tendons, and other connective tissue that doesn't look very appetizing, so that you're only left with good, clean, dense muscle. I suggest soaking the heart in a salty cold water bath to help draw out the blood from the heart.
Should you brine beef heart?
First things first – beef hearts need to be brined for a while. They are tough muscles and they need a good bath in salty spiced water to allow for the flavor to permeate the meat and to become more tender.
How do you make heart meat tender?
The heart is a tough muscle. To make it edible, you need to either slow cook it as I do here, or you can slice it into "steaks" and fry them quickly - no more than 30 seconds per side, keeping them rare. If you overcook this meat on high heat, it will be very tough.
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