Per request, copied from comments a few days back:

adriana @ 5:31PM | 2003-07-11| permalink

vocal tonic from the mouth of tori amos herself:

Half a teaspoon of slippery elm
One dessertspoon of honey
two teaspoons of lemon juice
Add just a drop of water
and cream this to a paste.
Then add
6 thin slices of root ginger (or more, to taste)
3-4 thin slices of lemon cut into halves or quarters
Add boiling water, stir, let it sit, and let it cool a bit before drinking.