Dijon Rack of Lamb on The BGE with Mint Sauce

Name: Dijon Rack of Lamb on The BGE with Mint Sauce
Ingredients: Ingredients for the Lamb; 2 1/2 tablespoons dijon mustard; 2 tablespoons fresh mint, chopped; 2 cloves garlic, minced; 1 teaspoon onion powder; 1 8-10 - bone racks of lamb; 1 1/4 teaspoons sea salt; 1/4 teaspoon freshly ground pepper; 1/4 cup olive oil; Ingredients for the Mint Sauce; 1 cup fresh mint, leaves removed from stem; 3/4 cup olive oil; 2 tablespoons white-wine vinegar; 1 lemon juiced, 1 tablespoon; 1 teaspoon sea salt; 1/2 teaspoon freshly ground pepper