Ingredients: 1 teaspoon newly ground black pepper,2 teaspoons kosher salt,1 (5-pound) butterflied leg of lamb (9 pounds bone-in),1/ 2 cup newly squeezed lemon juice (3 lemons),1 lemon, zested,2 pounds (2 pints) plain yogurt (regular or low-fat),1/ 2 cup great olive oil, plus more for brushing grill,3/ 4 cup fresh entire rosemary leaves (2 large bunches)
Guidelines: