Why do hops give off the flavor and aroma that they do? “Because” is not the answer. They vary in Alpha Acids. Beta Acids, Myrcene and a host of other oils and acids. Where they are grown even matters.
This book covers over 110 individual hops and breaks them down piece-by-piece so you can properly craft your next homebrew. It also gives you information on what to expect regarding flavor and aroma.