at least 3 different kinds of fruit juiceyou can use tonal colors or bright contrasting shades
Spoon or pour a little juice on the bottom layer of your ice cube mold. Freeze the tray until the layer is frozen, this might take 30 minutes or so, depending on how much you pour, the size of your tray, and the temperature of your freezer.
Once frozen, spoon a different layer over the top, and freeze again. Repeat with the third juice.
When the cubes are frozen solid, remove them from the mold and add to your drink of choice. It will help preserve your pretty ice if the drink itself is already cold.
https://theviewfromgreatisland.com/minimal-monday-layered-ice-cubes/ May 27, 2013