Rose ice cubes are simple to make but getting them crystal clear can be difficult. I've found using tap water is best. Remove roses from their stems and place them upside down in an ice cube tray. I usedSamuelworld Ice Cube Tray Large Size Silicone Flexible 8 Cavity Ice Maker for Whiskey and Cocktails, Keep Drinks Chilled (2pc/Pack)/a>"> this one. Add tap water and place the tray into a deep freezer or if you don't have one, place the tray into a the bottom of a small ice chest and place the that into your freezer. Freeze the ice cubes over night.