When we were in India, we visited MV Spices and bought a lot of Indian spices (probably at tourist prices), including a spice mix for Indian Chai (tea). The ingredients listed on the tea bag are:

Cardamom
Cinnamon
Ginger
Nutmeg
Black Pepper
Clove

The recipe, copied from the back of the bag, is as follows:

2 cups water
1 spoon tea (black tea)
Little tea spice
2 spoons sugar

Boil 5 minutes
Add hot milk (or dry milk)
Boil 3 minutes
Filter and serve.