Combine the water and ingredients through nutmeg in a small pan.
Cover and bring to a boil.
Once liquid reaches a boil, reduce heat to low and simmer for 20 minutes.
Remove from heat and add tea bags and sugar and steep for 5 minutes.
Stir and strain liquid through a fine mesh sieve.
Add vanilla and grated cinnamon and stir.
Pour into large mason jar and store in fridge for 1-2 weeks.
To use, mix with equal parts frothed or heated milk of choice.