Today I brewed a variation on Mullerbrau's Two Hearted Ale clone (11 gal), and my first single hop ale using centennial. I decided to use up some ingredients at home, so for his recipe's vienna I subbed mostly munich with a little victory, and for his crystal 20 I used a little less crystal 40, making up the difference with carapils. And the nearly amber color is a contrast to the other 30 gallons I have going that are all light-colored beers, mostly German Pilsner and Munich Helles.
Also, I used some frozen/vacuum-sealed fresh centennials from last September a friend gave me for the 15, 10 and 5 minute additions. I used new pellet hops for the 75 and 40 min. additions. In ProMash I calculated the fresh hops at 2% AA, and based on tasting the hydro sample I think I came close to hitting the calculated 50 IBUs. I used nearly quadruple the amount of fresh hops as recommended for dry hops, not having any idea what %AA the fresh hops were, and boiled an extra minute on each of three additions while stirring.
Also, I ended up hitting 1.066 SG instead of Greg's 1.072 SG, an anticipated shortfall because I really knew that I had overestimated my brewhouse efficiency. The 23 oz of fresh hops soaked up a lot of wort but I still got full volume into the fermenters plus a little. US-O5, pitched at 62F and will ramp up to 65 over the next few days and then keep it at 66 - 67F. I'll dryhop in the keg with 1 oz pellet hops per keg, or more depending on the taste when I rack to kegs. It's only my second fresh hop beer; I was very pleased with results so far.