Basically it's water. It freezes within less than three hours. i performed an experiment and that was true. But, what surprised me was when i put the liquids in glass the milk froze the fastest. If you have any further questions leave a comment or something and i will answer.
Sugar water will freeze faster. Salt lowers the temperature at which water freezes. That is why they put salt on the roads and on sidewalks in snowy areas. Sugar in water should have little to no affect on the rate of freezing.