In a large bowl, combine ginger, cumin, salt, turmeric and cinnamon. Add lamb to bowl; toss to coat in spices.
Step 2
In a 3 1/2- to 4-quart slow cooker, place lamb, sweet potato, tomato, carrots, onion, dates, olives, tapioca, lemon peel, lemon juice, honey and garlic (see Tip). Pour broth over all.
Step 3
Cover; cook on low-heat setting for 8 to 10 hours or on high-heat setting for 4 to 5 hours.