Picadillo Beef Chili

2 tablespoons olive oil or 2 tablespoons lard 5 garlic cloves , minced 1/2 onion , chopped 3 tomatoes , thinly sliced 1/2 lb lean ground beef seasoning salt ,[...]

4 lbs boneless beef sirloin (cut into about 1-inch pieces or a bit smaller) seasoning salt black pepper 4 -6 tablespoons oil (more if needed) 2 large onions ,[...]