I ran out of chai teabags recently, but then realised I can make it from scratch 
Here’s the recipe I use, courtesy of Lisa Young. EDIT: 15/07/07 Made some corrections.
Ingredients
freshly grated ginger (about the size of a thumb)
3 good sized bay leaves
1 cinnamon stick, broken
cloves & cardamon pods (8-12 of each, smashed)
5 grinds black pepper
2 star anise, smashed
3 dessert spoons black tea (Madura is best and definitely no teabags!)
3 cups soymilk (preferrably Bonsoy)
The Real Method
I have to say, no powdered ingredients please, and the ginger must absolutely be fresh. And smash the cloves, cardamon & anise like you mean it 
Boil all spices in 5-6 cups water for about 10 minutes.
Remove from heat, add tea and bring back to boil. Switch off and let brew for 3-5 mins.
Then add soymilk and reheat until almost boiling but do NOT boil.
Strain and add honey to taste.
> And smash the cloves, cardamon & anise like you mean it.
Smashed like Boris Yeltsin after he’s spent a long day at work and then downed a few Stolichnayas to relieve the stress of toppling Communism?