I pulled a 3 oz sample tonight. Wow, it's great.
I recall going from the bucket, after a month of primary, into glass for aging, that it tasted astringent, a bit nasty. I wasn't really worried. A lot of that, I think, was bite from yeast and bugs in suspension. It was always in the back of my mind, though.
All that is totally gone now. I couldn't be more pleased for my first sour.
I've done some other mixed culture projects since this one, which actually had that same bite after primary, but I haven't tasted them since. I've also done a couple of kettle sours, which I was really pleased with, but the sour in those where one dimensional. They didn't have the elegance of a great sour.
I haven't been able to get my hands on a wide variety of great sours, but I have been fortunate to get a stock pile of The Crooked Stave bottles. This sample had that same elegance in the way the sour presents itself as the CS beers do. I'm not saying I made anything on par with those beers, but this beer made from TYB Melange is definitely rounding out with a superb, refined character.
Now the question is, do I let it ride still, or is it time to package?