My first purchase was the liquid, and then I read the bottle and it said refrigerate after opening. Daaa! It has been sitting along side the rest of my wine supplies. So, I ended up throwing it away, since I had it for quite some time not knowing if it was good or bad, and not wanting to take the chance. The next purchase was the powder! Maybe I should carry both? That way when a recipe calls for liquid or powderI have it on hand. Gee! My cupboards are bare in the kitchen, but not in the wine room. he! he!