2 pounds beef or lamb, cut into 2 inch chunks. 1 teaspoon sea salt 1 teaspoon ground black pepper 1/2 cup olive oil 2 tablespoons butter 1 large yellow onion, chopped (about 3/4 cup) 1 teaspoon garlic, minced 1 jalapeno pepper, seeded and stemmed, minced 1/2 cup tomato paste 1 can (28 ounce) crushed . . . → Read More: Kalderata