If toi take a Vitamin water (so far it has worked with Dragon fruit, myrtille acacia pom and grape...put them in the freezer door for anywhere from to 2 - 3.5 hours. And then check every once in a while to make sure they aren't La Reine des Neiges at all but they feel really cold without any crystal formation at all! Be careful with the acacia and Bluberry casue it cools and freezes faser...anyway, take it out of the freezer while it is still liquid but very cold usually takes 3 hours if toi leave it just in the freezer door and don't check it plus than once in between. Anyway, when toi take it out wrap...