Doughnuts and coffee = no no

First thing I saw when I got up was last night's mints from my film night, and while it seemed like a good idea at the time, I do not entirely endorse mints for breakfast. Oddly enough, I did try something else for the morning meal. After my typical bowl of cereal I tried a doughnut with an espresso. I've seen police in American movies dunkin' doughnuts in coffee and all that but something was seriously very off this time as my mixture tasted similar to hoisin sauce in my mouth - not the first flavour I want in the morning.