Slice your vegetables into equal sized cubes and feed onto BBQ skewers. Then drizzle with harissa, oil and lemon juice. Roll in chopped mint and leave to marinade.
Preheat your BBQ grill to 200?C and place the skewers above hot glowing embers to grill for 3-4 minutes on each side. Serve on a bed of watercress and mint salad drizzled with Black Truffle Hot Sauce.