Coffee or spices can indeed leave their essence in grinders. However
there is a way to get them free of the taste/scent.
Put 2 or 3 tablespoons of dry baking soda in the grinder along with 3
saltine crackers. buzz it about for at least 30 seconds, shaking the
grinder up & down while it is running.
Occasionally you might have to repeat the process but it works.
for burr grinders (the kind that the material runs through from a hopper
into a receptacle, mix baking soda with white rice so you have at least
1/2 a cup (half & half) and run that through the grinder.
This is good for cleaning the grinder after processing oily nuts or very
oily grains or legumes.
--
Andie Paysinger & the PENDRAGON Basenjis,Teafer,Cheesy,Singer & Player
asenji@earthlink.net So. Calif. USA "In the face of adversity, be
patient, in the face of a basenji, be prudent, be canny, be on your
guard!"
http://home.earthlink.net/~asenji/