The big new thing I keep hearing about are Ruby chocolate bars, born of the ruby cacao bean. Chocolove xoxox, one of my very favorites, makes a ruby cacao bar which seemed like the best place to start. I asked a number of people to sample the bar with me. There's a fruity essence to the chocolate, something vaguely funky or tangy. The closest comparison I can make is as whole milk is to buttermilk, milk chocolate is to ruby chocolate. I liked savoring a cube and letting the flavor unfold, like cheese or wine. I wouldn't want to eat a bunch of ruby chocolate at once, though--one bite at a time is plenty.