Ph? Garlic Soup

Ingredients

• ["ph? chicken stock", "2 tablespoons olive oil", "2 pounds chicken thighs or a combination of chicken parts", "1 gallon water, to fill a big pot", "3 carrots, unpeeled, cut in big chunks", "2 yellow onions, peeled, quartered", "4 star anise pods", "4 green cardamom pods", "1 cinnamon stick, about 2\""