Prepare Ingredients: Rinse beef heart and cut into bite-sized pieces. Roast marrow bones at 375°F (190°C) for 25 minutes.

Cooking: In a large pot, combine water or broth, beef heart, and roasted marrow bones. Bring to a boil, then simmer for 3-4 hours until the heart is tender.

Season: Add salt to your taste.

Finish: Remove marrow bones, scoop out marrow, and return it to the stew. Discard bones.

Serve: Serve hot, ensuring each bowl contains hearty pieces of beef heart.