Instruct: Classify Amazon reviews into positive or negative sentiment
Query: excellent recipe resource

I've made 6 different all-grain beers from this book so far, and all have been very good. The Northwest Stout recipe won me best overall at a local beer club event, over 35 other beers. There are other books much more suitable to "teaching" homebrewing. However, if you already have batches under your belt and you want to add some nice variety to your beer fridge, this book is definitely worth it.Cheers.