I also use milk grains with coconut water, I don’t add anything else in & it comes out well. It loses all its sweetness, but I add a bit of stevia back to it & it tastes pretty good. That might be worth a try if you don’t get on with milk variations.
genius idea…i’m guessing you get the double whammy of the benefit of the coconut alongside the benefit of the probio. many thanks for posting