In a very large pot heat add 2 tbs of oil and heat over medium heat. Add the onion slices and cook until translucent. Add the Turkey carcass, drumsticks, garlic, ginger, clove, star anise, cloves, cinnamon, shiitake mushrooms, cilantro sprigs and enough water to cover or mostly cover the turkey carcass.
I typically make this soup after we have roasted a turkey or chicken. I will wrap the carcass and freeze it until I am ready to make soup. If you do not have a leftover turkey or chicken carcass you can buy just wings and drumsticks to make the broth. For a turkey, I would use at least 4 wings and 4 drumsticks.