Grilled Lamb Chops with Roasted Garlic Horseradish Sauce

Name: Grilled Lamb Chops with Roasted Garlic Horseradish Sauce
Ingredients: 1 cup ground black pepper; 1/3 cup ground white pepper; 1 1/2 tablespoons ground cayenne pepper; 1 small bunch fresh marjoram; 2 tablespoons olive oil; 10 cloves garlic, peeled; 4 large white mushrooms, cleaned and sliced; 4 large shallots, peeled and chopped; 1/2 pound roasted lamb bones; 2 teaspoons cracked black pepper; 1 small bunch fresh thyme; 2 cups chicken stock; 1 cup veal demi-glace; 1/4 cup grated fresh horseradish; Salt, to taste; Fresh lemon juice to taste; 16 (1- inch thick) rib lamb chops, butchered in the French style; 3 tablespoons peanut oil