Water + Salt = ICE CREAM!
"Salt makes the melting rate of ice slower. Salt requires the ice to use more energy to melt. This draws more heat from the solution, which results in a larger temperature drop." - Sciencing
"This knowledge had lead to keeping our favorite cold icy treat from melting! Old-fashioned ice cream makers used rock salt to lower the temperature around the buckets that the ice cream was being made in. The salt helps the ice cream freeze faster, dropping the water to a lower freezing point than the 32 degrees F before the salt." - Sciencing
Read more at sciencing.com!