Cumin-scented Stir-fried Beef with Celery Recipe

Jessica: we have just spent some time in Gansu and Ningxia and Shaanxi; I don't think you have enough cumin or chilli in this (we lived in Asia for nine years) but maybe you are tailoring it to western tastes?) I used this, using shredded lamb fillets rather than beef, adding three finely chopped very hot birds eye chillies, 2 tsp of freshly ground cumin after roasting the whole cumin until it smells 'toasted', 2 1- cm thick slices of fresh ginger finely chopped with four large cloves of garlic a tsp whole coriander toasted and finely ground and a couple of pieces of star anise. When cooked, fold into steamed wheat pancakes (like naan) or warmed pita bread with a bit of plain yoghurt and some fresh coriander if you have it.