Red Wine-Braised Brisket With Horseradish Mashed Potatoes and Caramelized Brussels Sprouts - Good Ne

Ingredients

• 3 pounds beef brisket, fat trimmed
• 1 tablespoon cumin
• Salt and pepper
• 1 tablespoon canola oil
• 1 yellow onion, quartered
• 6 cloves garlic
• 2 cups red wine
• 2 cups chicken stock
• 1 six-ounce can tomato paste
• 2 sprigs rosemary
• 3 pounds Yukon Gold potatoes, peeled, cut in one-inch pieces
• 1 cup whole milk
• 1 cup sour cream
• 3 tablespoons butter
• 2 tablespoons prepared horseradish
• 2 pounds Brussels sprouts, halved
• 2 tablespoons canola oil
• 1 cup packed brown sugar