Cut the meat into strips or small pieces and toss with the chilli powder and cumin until coated. Heat the oil in a frying pan and stir-fry the turkey over a medium heat for 3-4 minutes or until cooked.
Wrap the tortillas in foil and place in a 180C/350F/Gas 4 oven for 10 minutes or warm in the microwave for 45 seconds on full power.
In a small bowl, mix the mayonnaise and mustard together. Toss the avocado with the lime juice.
Put the avocado, sliced cucumber, halved tomatoes and hot turkey on a serving platter or in separate bowls and the warmed tortillas on a board.
Top the tortillas with selection of ingredients, spoon over the mustard mayonnaise and roll up the tortillas!