Heat the rest of the oil in the pan and then add the onion and capsicum. Cook this for about 5 minutes or until they have softened. Next add the garlic, cumin, and coriander. Cook this for about a minute or until it is fragrant. Add the mince back to the pan and mix it all together. Now add the beans, tomato, oregano, chili and 115 ml cold water. Cover this over and let it come to the boil, reduce the heat to low and simmer it for 30 minutes. Take off the lid and simmer for another 15 minutes or until the sauce thickens.