make coffee cool faster?
It may allow some warm air or vapor to escape, but its primary purpose on many lids is to support airflow during drinking. It shouldn’t be relied on as a cooling mechanism.
Can the tiny hole make my coffee leak?
The vent itself is not necessarily a sign of a leak. However, liquid may escape through an opening if the cup tips or is handled roughly. Keep the cup upright and check that the lid is properly fitted.
Why does my coffee sometimes come out in
