36 raw shrimp, peeled and deveined (about 1 pound)
To prepare sauce: Mix mayonnaise, yogurt, parsley, mustard and hot sauce in a small bowl. Cover and refrigerate.
Preheat grill to high.
To prepare shrimp: Combine cumin, paprika, coriander, garlic powder, salt and pepper in a large bowl. Add shrimp and toss to coat with spices. Thread the shrimp onto four 12-inch skewers. Oil the grill rack (see Tip). Grill the shrimp until just cooked through, about 3 minutes per side. Carefully remove the shrimp from the skewers. Serve immediately, with the sauce.