Like all types of coffee, plain, and not much of a tea person (Earl Grey if I'm in the mood).
I prefer my coffee in MY mug and I've been known to wrap it in bubble wrap and put in the suitcase
when we travel on vacation. (only in my carry-on bag)
It's nothing special looking, just brown, heavy, without any writing on it.
Not sure what I'll do if it ever breaks. Have a second favorite, but it's just not the same.
OCD maybe...?