Pepián de Pollo (Chicken Stew)

WHAT YOU'LL NEED

• 3 medium yellow onions
• 1 (5-1/2 to 6-lb.) whole chicken, skin and all visible fat removed
• 3 Tbsp. Knorr® Chicken flavor Bouillon
• 11 cups water
• 6 large cloves garlic, unpeeled
• 1 lb. plum tomatoes
• 2 dried guajillo chile peppers, toasted and stemmed
• 2 dried poblano chilies or mulato chilis, toasted and stemmed
• 3/4 cup (105 g) pumpkin seeds, toasted
• 3/4 cup (105 g) sesame seeds, toasted
• 15 whole black peppercorns, toasted
• 8 whole cloves, toasted
• 1 medium cinnamon stick, toasted
• 1 small bunch fresh cilantro
• 5 tsp. dried Mexican oregano leaves, toasted
• 6 large carrots, about 1-1/2 lb., peeled, sliced into 1/4-in. thick slices
• 4 medium potatoes, about 1-1/4 lb., unpeeled, cut into 1/2-in. thick quarter moons
• 2 chayotes, peeled, pitted and cut into 3/4-in. cubes