Radical Brewing is a must have book in the homebrewing world. This book is completely out of the box and gets right down to business. I also like the fact that Randy Mosher just guides you into the right direction rather than spelling everything out for you. He lets one use there own imagination. So if you are looking to search beyond the average brew book, then pick this one up. You will be introduced to different herbs, spices, sugars and techniques that will give you the extra edge you need to make your beer a cut above your fellow brew geeks.