HFCS in a warm place does, and HMF can form quickly. After killing a couple hundred nucs by feeding HFCS that was stored for 2 years in drums at 70 deg, I can confirm that Randy. Not a pretty sight. *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html Guidelines for posting to BEE-L can be found at: http://honeybeeworld.com/bee-l/guidelines.htm