Pre heat your griddle or heavy based frying pan until it sizzles when you add a drop of oil Season the steak just prior to cooking Massage with a little olive oil, creating a very thin layer over the meat Cook over high heat turning the steak only once after a rich, golden crust has formed, reduce heat to medium when crust has formed Cook 3 to 4 minutes each side for medium rare Leave to rest in a warm place at least 5 minutes before carving To Serve Heat the flour tortillas following the producers cooking instructions Peel and slice the avocado and squeeze a little lime juice over Mix together the salad ingredients with a drizzle of olive oil & sea salt to taste Pile onto the centre of each tortilla the tomato & avocado salad mix Slice the beef very thin against the grain and scatter over the avocado mix Top with red chilli, lots of coriander and the drizzle of soured cream