Rack of lamb with parsley root puree and spicy chocolate sauce

After the hearty holiday menus with roasts, red cabbage, and dumplings, New Year's Eve can be a bit lighter and more unusual again. A pink roasted rack of lamb was therefore my first choice for our New Year's Eve menu. But instead of a heavy, filling side dish, I opted for a parsley root puree. It's quick to make and pairs excellently with lamb. But just lamb alone and some puree was too boring for me. So I needed a delicious sauce. That's when I got the idea to try something with chocolate. So I took a little he...