I'm a chai tea latte addict and I *love* it with soymilk, extra hot and spicy. I've been bleeding my pockets dry by feeding my addiction with Starbucks, Caffe Nero etc (I am in London) - does anybody have any good recommendations for the powder mix they use?

I like a chai with a good spice, peppery nutmeg note optional (this is the Starbucks flavour with a gingery kick). I'm not one for a tame vanilla chai, so please help out!

I noticed that my school cafe uses Zuma, it'd decent but doesn't come close in intensity to the Starbucks one ...