Place lamb pieces in a large bowl. Add lemon juice and toss to coat. Cover and refrigerate for 10 minutes.
Meanwhile, place ginger, garlic, cumin seeds, ground coriander, red chili powder, paprika and yogurt in a food processor. Process to a smooth paste. Add a little water if needed.
Add mixture to lamb. Toss to coat. Cover and marinate for 39 minutes or overnight if possible.
Preheat barbecue or grill to medium.
Thread lamb onto skewers. Place them on the grill or barbecue in a single layer.
Cook the lamb, turning, for 6-7 minutes on each side or until cooked to your liking.
Serve with peach salsa.
Add as a side dish to naan or pulao to make it a complete dinner.