Corned Beef Brisket With Roasted Vegetables

Ingredients

• 3 1/2 - 4 pounds boneless corned beef brisket with seasoning packet
• 6 cloves garlic
• 2 teaspoons black peppercorns
• 2 cups water
• 1 pound baby carrots halved crosswise
• 1 pound parsnips cut into 2 1/2-by-1/2-inch pieces
• 1 pound savoy cabbage cut into wedges
• 2 tablespoons olive oil
• 1/8 teaspoon coarse salt
• 1/2 teaspoon ground black pepper