Classic Shepherd's Pie- RELOADED Recipe - Alton Brown

Ingredients

• 2 pounds russet potatoes
• 3 tablespoons kosher salt, divided
• 1/2 cup half-and-half
• 6 tablespoons unsalted butter, cut in cubes
• 1 large egg yolk
• 2 tablespoons vegetable oil
• 1 cup chopped onion
• 1 1/2 cups peeled and finely diced carrot
• 2 cloves garlic, minced
• 1 1/2 pounds ground lamb
• 1 teaspoon freshly ground black pepper
• 3/4 teaspoon curry powder
• 2 teaspoons chopped fresh rosemary
• 1 teaspoon chopped fresh thyme
• 2 tablespoons all-purpose flour
• 1 tablespoon tomato paste
• 1 cup unsalted chicken stock
• 2 teaspoons Worcestershire sauce
• 1 cup frozen English peas