Weyermann says that once opened, Sinamar should be "used immediately and stored cool," two seemingly inconsistent instructions. It occurs to me that when I buy it, William's has already opened the original trade package and repackaged, it without necessarily storing it cool thereafter. I have a partial bottle in the fridge that I may not get through very quickly. I'm wondering... has anybody found an upper limit to how long the homebrew packaged stuff is good under such conditions? If it deteriorates, what are the indications and effects?