I've been making LO purees, and have mainly been using breastmilk. However, I don't always have fresh breastmilk on hand, and I don't want to defrost a bag of frozen just to use a small amount in a puree. I asked the pedi if I could use water and the NP said I should use breastmilk or formula...but if I were using jarred baby food, it would have water in it, right? So I don't really see why I can't use water. What do you use?