1 small cucumber, seeds removed and chopped
½ lemon, juice only
1 lemon, juice only
750g/1lb 10oz mushrooms, roughly chopped or torn
60g/2¼oz fresh flatleaf parsley
100g/3½oz pomegranate seeds
½ small red cabbage, thinly sliced
1 small red onion, finely chopped
250g/9oz plum tomatoes, cut in half
1 tsp sumac
3 heaped tbsp light tahini
salt
2 tbsp shawarma seasoning
4 tbsp vegetable oil
2 heaped tbsp full-fat Greek-style yoghurt
4 wholemeal pittas or flatbreads, lightly toasted, to serve