It has taken up a slightly brown hue over time. Between Sriraca, Tabasco,assorted Torguga and Melindas among others incurrently in my fridge I almost revere the stuff as it (Crystal) has the best taste.
You can save Crystal till you go to your grave. It will discolor and loose some potency but is usable. Usually, A bottle doesn’t last long around my house![;)][:p][:D][8D]