Dyce,
Capsaicin crystal in its pure form is NOT to be played with, especially if you are even THINKING about adding it to food. Anything in the range of over 4-5 million Scovilles is just plain nasty, and even attempting to handle 15-16 million without proper protective gear (and maybe a clean room and auto-sterilization unit) is foolish at best. I have some of the pure crystal, and have no intention of ever opening the vessel. It's for show only, as there is no need to try it. Unless you have about 5000 gallons of chili you want to add it to, there will be no pleasure in eating it. Many people I have met over the years have a large misconception about capsaicin, and believe nothing is too hot for them. Anyone who even remotely believes they can ingest even a single crystal of the stuff is fooling themselves, and if they are even the slightest bit asthmatic, will probably end up with an airway that slams shut, as they try to dial 911 without a voice, meanwhile turning blue. Please take my advice, if you want the pure crystal, by all means get it, and admire it on your shelf. It may be 'cool' to own, but its ingestion is just foolish. Don't take this as a personal slam, I'm just here to give you advice, and pure crystal is no toy to experiment with food with. As for the taste, find an extract that was made without the use of ketones (like our ZERO, sorry, shameless plug).