Heat the oil in a large pot. Add the onions, garlic, and bell pepper and cook over medium heat stirring frequently so garlic doesn't burn. Add the ground meat and cook until brown. Add the tomatoes, tomatoe paste, beans, water, and reduce heat to a low simmer. Cook, uncovered, for at least 1 hour (the longer the better), stirring occasionally to make sure the bottom doesn't burn. Garnish with Tobasco, Grated Cheese and/or Sour Cream on each serving.