Serves 2

1 beef heart, veins and fat trimmed off
1/2 cup of red wine vinegar
2 tablespoons olive oil
Salt and Pepper to taste
3 to 4 cloves of crushed garlic
1 large chili peppers, finely chopped without seeds
1 tablespoon ground cumin

Cut the heart into 1-inch cubes. In a large bowl mix the vinegar, oil, salt, pepper, crushed garlic, chili pepper and ground cumin. Add the heart and let the marinate for several hours or overnight.

Remove the meat cubes, lightly salt them and put 3 pieces onto one skewer. Cook over a hot grill for approximately 3 minutes per side, brushing them with the vinegar mix.