I'm surprised this hasn't come up before but I'm sure many of you have tried different milks and waters: Cow's, Soy, Rice, Oat, Almond, VitaCoco, Flax, Cashew, Hazelnut, Hemp. There are probably plenty more I'm missing, who knew you could milk these things?!
What do you like? I personally stick with water but I know you innovators like to mix it up!