Combine the apple sauce with all the other ingredients up to and including the chilli flakes. Brush the meat with the marinade, cover and leave to marinate in the fridge for approx. 1 hr.
To grill the meat
Grill the meat over/on a high heat for approx. 4 mins. on each side. Sprinkle with fleur de sel.
To grill the pak choi
Brush the pak choi with the sesame oil, place in a grill tray. Grill over/on a medium heat for approx. 3 mins. on each side, remove the stem, sprinkle the leaves with fleur de sel.