Following two persons advice, I've got some oat milk to put in my coffee. They both said they prefer it to milk.
I thought it was too watery. I wonder if the grain juice I got wasn't very good. It's "Planet Oat" oat milk original unsweetened. It barely adds any color, texture or taste to the coffee.
So, coffee drinkers: do you like your bean tea with oat juice? If so, is it supposed to be that watered down? If not, what brand of grain juice do you prefer?
I make my own cold brew concentrate and oat milk, and then use the oat milk in place of a third or so of the water. It doesn't really end up watery, and you can adjust the flavor by tinkering with the oat milk recipe. I prefer it to dairy milk because it is cheaper, lasts longer in the fridge, and causes less suffering to dairy cows (I still consume dairy, I just substitute when possible).