Toss together the oil and peppers, then cook in a non-stick frying pan for 3 mins until starting to brown. Add the sweetcorn, pork and cumin and stir well. Cook for 2 mins more until the pork and sweetcorn are heated through and starting to turn golden. Season well.
Heat the tortillas in the microwave for 30 secs to soften. To serve, place the tortillas, pork, avocado and other ingredients on the table and allow everyone to help themselves – pile up the pork and veg in the tortillas, top with avocado and your choice of soured cream, chilli, coriander leaves and lime.