Grilled Duck Breasts in Red Pipían - Rick Bayless

Ingredients

• 3/4 cup (about 3 ounces) untoasted hulled pumpkinseeds
• 4 tablespoons vegetable oil or fresh-rendered pork lard (divided use)
• 2 medium dried ancho chiles, stemmed, seeded and torn into large pieces
• 1/2 medium onion, sliced about ½-inch thick
• 2 garlic cloves, peeled
• 1/2 teaspoon black peppercorns
• 1/2 teaspoon allspice berries
• 1/2 inch canela (true cinnamon stick)
• 4 cloves
• 1/2 teaspoon dried thyme
• 1 slice firm white bread
• About 4 cups chicken broth
• Salt
• Sugar
• 4 boneless, skinless duck breasts