For the mince base, heat the oil in a large frying pan or sauté pan over a medium heat, then add the onions, carrots, celery and peppers, stirring regularly until softened, this will take about ...
Remove from the pan using tongs and keep warm. Add the remaining oil to the pan and stir-fry the beef over a high heat until cooked through, 2–3 minutes. Add the vegetables, mushrooms ...