How can Sahil have the best chance of winning over Gaurav?

Question

Sahil is sitting at his desk, being cool, when his younger brother Gaurav walks up. Gaurav had recently been practicing his (fake) magical powers, trying to turn cheese into more cheese, so he believes he can beat Sahil in anything. He sets up a little competition, the first to get 5 ounces of water to freeze, will be proclaimed the coolest guy in their home.

They set up some rules, as follows:
-They both can only use normal water that comes out of their stainless steel faucet.
-They both use identical containers
-They both must use the same freezer, at the same time.

Now, Sahil realizes that if he were to lose, he would become less cool, he just doesn't roll like that. So, how can Sahil have the best chance of winning over Gaurav?

Answer 1

All Sahil has to do in order to be the winner is use hot water.

Gaurav, being less cool than Sahil, didn't know that water with a hot average temperature freezes faster than water that is at room temperature. The phenomenon that hot water may freeze faster than cold is often called the Mpemba effect.