As I understand it, you boil the barley for a few hours, let it cool and then use the water. You add the water to sugar and bring it to the hard candy stage.
I'm having a cookie party and want to make some barley clear toy suckers as presents.
I have never made this, but my in-laws always talked about barley candy and barley water. I googled this,: http://www.life123/food/candies . They explain the history and the "how to" and give a recipe for candy and lollipops. Poodlepet
It's a hard, clear (colored) candy that's made using molds. You can buy at Shane's Candies in Philadelphia but very expensive (considering it's just hard candy).