Chai Latte

In a small pot over medium heat, bring spices, sugar, and water to a boil. Reduce heat and let simmer for 5 minutes.  Bring mixture back to a boil, then add tea bags and vanilla and remove from heat. Cover and let steep for 10 minutes. Remove tea bags then strain tea and discard spices.  In a medium pot over medium heat, bring milk to a simmer. Turn off heat and use an immersion blender to froth milk. To each mug, pour 3/4 cup chai tea and ½ cup warm milk, adjusting amounts according to preference. Top off each mug with milk foam and a sprinkle of ground cinnamon and cardamom.