Created by the French design firm 5.5 for avant-garde Spanish chocolatier ChocolatFactory, the domes are actually edible chocolate. Each one is made of differing percentages of cocoa bean. The outermost dome has the least cocoa content, at 60%, and the innermost dome has the highest cocoa content, at 99%. (The percentage is stamped into the nub atop each bell.) When you lift that last dome…
…you get 100% cocoa. That is, a cocoa bean.
via Fast Company
