Beer and Ingredients II, The Ultimate Beer Ingredient Guide, What Does What.: Take Your Homebrew to the Next Level, Brewers Ingredient Guide.
Patrick Klungle has amassed a wealth of knowledge regarding Traditional and Non-traditional ingredients used in brewing beer and was able to put them into an easy-to-read book. As you pick and choose your ingredients at your local beer brewing supplies store, use this book to give you an idea of what you are making and how you want it to end up.