Hi all, not sure if this is the correct place to post this question, so I'm sorry if so. Anywho, my wife bought me "Clone Brews" for Christmas. It has over 200 recipes of commercial beers. Pretty good ones too. All the recipes are for extract with an all grain option at the bottom. However, nearly every recipe calls for a 90 mash and a 90 minute boil. And the hops are measured in HBU's (Hombrew units) which is confusing for me to figure out. Question is, should I continue doing my normal 60 min mash and 60 min boil, and just follow the hop schedule as per the extract recipe and try not to follow the crazy HBU percentage? Seems like a good book, but also seems difficult to follow. Anyone use this book? Thanks all for the help!