For Scotch whisky lovers, and indeed, whisky aficionados in general, Islay is so much more than just a whisky region. Islay whisky may well be up there with the best in the world, but it can also be quite polarising, largely due to the unique taste. As time went by, consumers began associating smoky, medicinal whisky with Islay. To understand that deep and complex peat smoke synonymous with Islay, however, it’s important to understand PPM, or Phenol Parts per Million. This super-heavily peated whisky is the most heavily peated dram on the planet, with PPM levels of between 100 – 200.