If you have a cup of coffee which is too hot to drink, should you add cream to it immediately to cool it or let it stay black and sit for a while before adding cream? The object is to get it cool enough to drink in the shortest possible time.
1 Answer
Mar 3, 2018
Leave it to sit for a while.
Explanation:
If you delay adding the cream, the coffee - being much hotter than its environment - will lose energy faster than if you put the cream in first.
The only thing to watch out for is that the cup itself may be hotter this way.