Both my brother-in-law, Dave, and my sister-in-law, Alex, answered with an emphatic "chocolate" when I asked them what flavour they wanted their birthday cupcakes to be.
After a little more thought, Alex added that she wouldn't mind Nutella cupcakes either. Since I was delivering the cupcakes to both of them on the same weekend, I decided to cheat a little and bake them both chocolate Nutella cupcakes.
I never ended up eating any of these cupcakes, although I did have a few mini bites made with the leftover batter. I did, however, get lots of comments from the ones that did get to eat the cupcakes so I have a fairly good idea of how they turned out.