How much faster will cold water freeze than hot water?

In theory, water that has been boiled and cooled will freeze faster than plain cold tap water.

Boiling removes the air bubbles that tend to slow down the freezing process, and it also reduces the amount of liquid.

However, in your kitchen or ours, the time difference is so minuscule, it wouldn’t be noticeable.

So don’t go boiling all your water just to save time.