I was underwhelmed by my catnip dehydrating experience. I need to be wowed, and I’ve been advised to make raisins. lol! How do you prep your grapes when dehydrating them to make raisins? do you blanch, cut, or pierce the grapes? do you dip them in a citric acid solution? And what is the expected yield? Every website says something different about how to prepare the grapes. One site claimed that 2 lbs of grapes would yield two 16 oz jars. I find that very hard to believe.