Unfortunately she didn't list the ingredients because she didn't know the english words for them - she just put together a baggie with everything in it and referred to it in the recipe as the "seasoning".
From what I can tell it has tea leaves (she gave me green tea but I've used black or oolong and it's just as good), dried red chillis, something that looks kind of like fennel, and star anise (that gives it the very distinctive almost liquorishy taste, I'm not sure what could replace it if you can't find it - maybe simply anise or aniseed which is different but tastes the same). And soy sauce in the water of course (and she added extra salt, but I don't). I don't notice any garlic or ginger but it might be mixed in as a powder.
As many times as I asked for specifics, she never gave them so I can't pass them on.
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She always simply said "oh you know, a handful/pinch/bit." Frustrating when you want to know teaspoon by teaspoon what's in there!
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Also, I don't know if the chilli peppers are normal - she was from Szechuan and put them in
everything but I think they add a nice subtle spice.