These are probably very nice cookies but I've found, once I made and tried them, that they really depend on your chocolate. Buy the best tasting, to you, dark chocolate you can find as these cookies really will taste exactly like the chocolate you put into them. I used a 73% cocoa chocolate I normally use for baking (still high quality but not something I'd eat normally). Because of the richness, make the balls quite small. The recipe makes much more than 20 cookies. Slightly time consuming due to chill time, shaping and rolling.