With so much choice these days and 24-hour food availability, it's worth asking why chocolate is the food craved most often. There are plenty of theories to explain those chocolate cravings but not a lot of solid proof. Here's my shot at an explanation where I aim to show that chocolate is in a "class of its own". Hear me out - I firmly believe no other food comes close to chocolate in terms of its superb flavour, rich concentrated composition, easy overconsumption and sensory chemical make-up.