sorry Dr.Bill, but synthetic vanilla is vile.. it has a vague vanilla taste, but it has none of the complexity of real vanilla. i prefer to use the beans, since even the extract goes flat faster.

a little vanilla flavor goes a long way... it not expensive to use the real thing. (after you cook the bean in liquid, they can be dried, (on a paper towel) and then packed in sugar.. they scent the sugar, and when added to coffee, add a slight fruity note.