There are days when a compulsion to eat something rich and chocolatey suddenly hits you. And no matter how many glasses of water you drink to trick your mind into thinking that you are full and that you don't need any more carbs in your body, the need for chocolate never really leaves your head and it just keeps on getting stronger and stronger every hour. When that compulsion comes, try these flourless chocolate cookies - rich, chewy, very chocolatey (with three different types of chocolate in it), and very easy to make.