I found a few 2010 bottles on a shelf at the local Bevmo and bought 2 of them. A few months earlier I bought 2 of the 2012 bottles and tried one. I wasn't impressed with the 2012 bottle but I thought the 2010 bottle was excellent. I saved the second bottle from each year with the intention of letting them mature before drinking them.
What I'm wondering is, how long can I keep it in the bottle before the aging starts to have a negative impact on the brew? I plan on going back to get a few more from each year so that I can taste them each side by side once or twice a year.