Back in February I brewed up a batch of Ed's Bee Cave Hefeweizen (somewhat modified through Brewsmith for partial mash, partial boil, late extract addition). There were no issues on brew day, hit my temps, etc. I left the batch in the primary for three weeks, then bottled. After three weeks in the bottles, at 70-75 degrees, there was absolutely NO carbonation. I did not get too stressed, just let it sit for another three weeks, plenty of other stuff in the pipeline. But, still no carb. We went on vacation, let another three or four weeks go by, still nothing. I replayed the mental tape of bottling day, and I definitely did not forget the priming sugar. At this point I opened up all of the bottles and added just a SMALL bit of Notty to each, based on my belief that the priming sugar was in there. Let another month pass, voila, that's some dang good beer, nicely carbed. Yay!
But. Back in June I brewed up a batch of Ed's Haus Pale Ale. It kinda got covered up with other batches after bottling. ( I use tall plastic containers intended for hanging file folders. They hold 15 bottles very nicely, and have lids that permit easy stacking. And, if a bottle happens to break, which has never happened to me, no mess.) Anyway, cracked one open a couple of nights ago, flat, flat, flat.
And again, there is no doubt that the sugar was added. Any ideas? I thought that maybe they were in the primary too long, but come on, it's just three weeks! Kinda stumped at this point. BTW, I'm not an oldtimer at this, but my handy-dandy log tells me that I have done over two dozen batches a this point. These are the only two that have remotely behaved this way.
Another BTW. The Hefe was made with the Wyeast hefe yeast, and the Pale Ale with Notty.