<<Disclaimer: Verify this information before applying it to your situation.>>

I forgot to include these suggestions in my summary...sorry
Vanilla powder is also available. Most health food stores carry it.
One reply also suggested a vanilla powder called "V" that was purchased at
the "regular" grocery store.  It's contents: dextrose and pure vanilla.
(Lochead Vanilla Co., St. Louis, MO  63104, USA)

Chris in Ontario
Rainbow says keep smiling :)
and
Better do a little well, then a great deal badly ~ Socrates