Step 1

Preparation Whisk together 1 cup yogurt, 2 tablespoons oil, 1 tablespoon lemon juice, salt, and spices, then add chicken and turn until coated well. Marinate at room temperature 20 minutes.

Step 2

While chicken is marinating, prepare grill for cooking. If using a charcoal grill, open vents on bottom of grill, then light charcoal. Charcoal fire is medium-hot when you can hold your hand 5 inches above rack for 3 to 4 seconds. If using a gas grill, preheat burners on high, covered, 10 minutes, then reduce heat to moderate.

Step 3

While grill is heating, whisk together remaining 1 1/4 cups yogurt and 1 1/2 tablespoons lemon juice and salt to taste.

Step 4

Grill chicken (discard marinade), covered only if using gas grill, on lightly oiled grill rack, turning over occasionally, until just cooked through, 10 to 12 minutes total. Transfer chicken to a platter.

Step 5

Toss together mint, shallot, and remaining tablespoon oil in a small bowl. Drizzle chicken with yogurt sauce and top with mint salad.

Step 6

Cooks' NoteIf you aren't able to grill outdoors, chicken can be cooked in a hot lightly oiled well-seasoned large ridged grill pan over moderate heat.