Heat oil in large skillet over medium heat. Cook and stir the onions and garlic until the onions become translucent. Add the bell pepper and tomatoes. Cook over low heat for 3 minutes. Add the tomato sauce.
2. Cooking cabbage
Stir in the cabbage, olives, vinegar and water and simmer over very low heat until the cabbage is wilted (about 5 mins.).Season with salt and hot sauce to taste. Mix in parsley or cilantro.
3. Serving
Serve right away to prevent the cabbage from becoming mushy. Goes great with arroz blanco, tostones and avocado.