I was watching Americas Test Kitchen and they were making waffles. Instead of buying buttermilk, they used buttermilk powder! They said its real buttermilk, dehydrated. He also said the stuff in the store is not REAL buttermilk. I have never bought buttermilk, so Ive never read the label. Anyway...anyone ever use the powder? I guess it keeps for near a year in the fridge!