Wash heart in salted water. Place in a large pot, cover with water and simmer until fork tender, about 1 1/2 hours. Drain and let cool. Cut in half; remove any membranes and fat. Cut heart into small cubes. In a saucepan, heat olive oil, saute onion and garlic until soft. Add heart, tomato paste, water and spices. Stir well, simmer covered for 1/2 hour, adding water as needed.
Per Serving: 140 Calories (49.7% from fat); 8g Fat (1g Sat, 5g Mono, 1g Poly); 7g Protein; 12g Carbohydrate; 2g Dietary Fiber; 40mg Cholesterol; 624mg Sodium. Food Exchanges: 1/2 lean Meat; 2 Vegetable; 1 1/2 Fat.