They do pre mixed drinks you can buy, but that's obviously an expensive way of doing it.
The easy way of imagining it is it's a bit like a smooth plain porridge in texture and taste, unless you get the flavoured versions or add your own additional ingredients.
It's perfectly paletable unless you're a really fussy eater.
That's how i describe it. Porridge, i love Original Huel with just water not just palatable but enjoyable.