Chocolate tasting is a skill anyone can learn with some practice and diligence. In the beginning it is easiest to start by tasting several different chocolates of the same cocoa percentage at the same time. You may be surprised how much difference there is in the tastes between 3 dark chocolate bars you have eaten before, never noticing any nuances. Even if you prefer only dark choccolate as I do, you will be surprised how tasty a good quality milk chocolate can be