When I make a hot drink, I put the milk in according to how I want the drink to taste. So after the tea has mashed, or first for coffee to stop the boiling water scalding the coffee.
When BH makes a hot drink, he doesn't put the milk in until he's ready to drink the drink. He says that as soon as the milk goes in, the drink will cool down so fast you need to drink it straight away.
So my question is this.
If you have a freshly-made hot drink, and some cool milk, and you are going to drink that drink in 10 minutes time, which is cooler when you drink it? The one you put the milk into straight away, or the one you only add the milk to at the point of drinking?