No matter how much you are into Espresso this book has more information than you could possibly care to know. The writing, research and presentation are impeccable. There are some fascinating facts and descriptions that are sure to make your ability to understand and make better espresso possible. There is however page after page of very heavily technical or scientific data that separate each one of these fascinating facts.Whether you are a roaster or just looking to further your understanding to make better espresso, you will learn from this book. But this book is really written for the " coffee scientist"