Strange Brews: The Genes of Craft Beer
nytimes.com
nytimes.com
It's really interesting how much yeast influences (through fermentation) a beer. You can even combine yeasts to give a beer an even more complex characteristics (as discussed in the book, "Yeast: The Practical Guide to Beer Fermentation"[1], written by Chris White of White Labs).
1. http://www.brewerspublications.com/books/yeast-the-practical...