2 heaped tablespoons fresh thyme leaves 1 level tablespoon ground chilli 1 level tablespoon ground cumin 4 level tablespoons sumac, if you can find any, or finely grated zest of 1 lemon sea salt and freshly ground black pepper a good handful of shelled pistachio nuts a few handfuls of mixed salad leaves, such as romaine or cos, endive and rocket, washed, spun dry and shredded a small bunch of fresh mint, leaves picked 1 red onion, peeled and very finely sliced 1 lemon a bunch of fresh flat-leaf parsley, leaves picked extra virgin olive oil 4 large flatbreads or tortilla wraps 4 heaped tablespoons natural yoghurt