Water soluble.
Fresh brewed Kona coffee **** Quote from TPA - "I had discontinued this flavor because of some negative reviews, but as soon as I did I received several howls of protest. The bottom line is - some people don't like this one, but others simply love it! - This is just another example of the wide range of tastes! Everyone is different...."
So, if you've never tried this flavor before, order a small bottle to try it before going in for a large bottle of it. :) ~ Rich
EDIT: This is now in stock and WOW does it smell potent! If you are making a coffee flavored item, this one should be measured by the drop, not the teaspoon! A little bit is going to go a LONG way with this one! ~ Rich