Press the sugar/water mixture into your mold firmly and and let the sugar harden in the mold overnight. Ice cube trays work in a pinch but you'll probably want to cut up the cubes when they come out.

Each is made from sucrose, which has been highly refined from sugar cane or sugar beets to a level of purity that reaches 99.8 percent, according to Harold McGee, author of ”On Food and Cooking.” ...

I conducted multiple rounds of testing on the 16 best ice cube trays and molds and spoke with Gitter and Micah Melton, Beverage Director at The Aviary, to find out what makes a great ice cube tray.