Comparing a vintage beer at different stages of its maturity isn’t something I get to do all the time, let alone a beer I have taken notes on. Recently, I’ve been cleaning up my wine and beer storage that I’ve wanted to check in on and, well, drinking them. I happen to pop this 2013 Imperial Russian Stout almost two years to the day that I last reviewed it here, on the New York Cork Report in 2013. Much about the beer has changed, yet much has stayed the same. The color and appearance of the stout hadn’t changed at…