This is a great tea to have in the summer. I make it almost every other day. It quenches your thirst more than water and becomes very cold in the fridge.
No need to add any sweetener, this tea is very mild and my kids love it.
We also drink it hot at meals or whenever.
I usually boil water in a big pot and add barley to fill the surface, turn off the heat, then cover. I drain barley once it cools down.