Colombian Ajiaco (Chicken and Potato Soup)

Ingredients

• 4 cups chicken stock
• 2 chicken breasts (bone in, skin on preferred)
• 3 medium yellow potatoes (peeled and sliced)
• 3 medium white potatoes (peeled and sliced)
• 3 medium Andean potatoes (or russet as a substitute, peeled and sliced)
• 3 ears of corn (cut into 2-inch segments)
• 2 scallions (chopped)
• 2 cloves garlic (minced)
• 1 small bunch guascas (or 1 tsp dried guascas, available in Latin stores)
• Salt
• pepper
• 1/2 cup heavy cream
• 1/2 cup capers
• 1 ripe avocado (sliced)
• Fresh cilantro (finely chopped)
• Steamed white rice (optional)