This isn't bad at all. In fact, it is pretty good: lemon tart plus chocolate is what I'm tasting.
Jon, what do you think?
This hot chocolate could actually be more lemony and less sweet of you ask me. It lacks the bitterness of lemon peel that would pair nicely with chocolate. It tastes very close to those "after dinner" candies, the old crunchy stick things that came in three or four flavors, one of which was lemon. It tasted exactly like the lemon stick.