It was suggested that I add a small amount of apple cider vinegar to my doggie's drinking water, because he has yeasty skin.  Yeah, I have that.  Pulled it out, and it has sediment in it.  It has been opened and about 1/5 of it used.  The pull date is March 2013.  Jabaar's water grew something that looked like mold.  Now, if he is yeasty, I certainly don't want him drinking moldy water!  I bought a new bottle of apple cider vinegar.  The funky bottle and some outdated baking soda are going to sweeten a drain....

I have never refrigerated vinegar.  Am I supposed to?  I'm no novice in the kitchen. but I don't claim to know everything.