I did a wheat beer about a month ago, 11 gallons, zested 5 navel oranges, juiced, and then added all of it to the last 5 min. of the boil. Smelled great going into the keg. Forced carbed and served 1 week later. At first the nose was orange and you could taste it at the end. Now its been about a month and you can't smell or taste it. I think the yeast pretty much ate all the orange. I still have another keg but haven't decided how to get more orange into it. On the other hand, the color and taste is now identical to Widmer Hefe.