Watch it if you are leaving in mom's pantry. For some reason, becasue I use the cap to measure mine it runs down the side and makes a mess. The rest of the Flourish products I use don't do this. Be sure you wipe it off when you're done or set it in something.
Quartermain...LOL..boy if it was I could save some $$. If I go to the oriental grocery store the stuff is dirt cheap!
flourish doesn't become unusable, but in rare cases has developed a mold like growth for some reason which can be prevented by refrigeration. most of the time refrigeration is not needed.