Heat some sunflower oil in a stockpot or saucepan over medium heat and brown the beef, using tongs to turn it, then add some salt. The beef will start to release its fats; let it cook in them. Take the beef off the heat once all the liquid has evaporated.
Heat some more oil in a frying pan over medium heat and sauté the onions, capsicum and chilli for about 1 minute.
Add the tes