Not drinking it yet, but given how old that is, damn, I should drink it sooner than later. But that might not matter.
Okay, so the code on my Weihenstephaner hefe is 0335. That puts it at, what, August of 2015?
Yeah, sounds right. How is it, still tasty?
I'm also still confused by that first digit.
As I understand it:
Let's use the first digit 1 and the month of January.
The first digit in the date code corresponds to the day of bottling, the next two digits to the week of the year it was bottled and the third, assuming a drink by date maximum period of one year, to the year of bottling.
The first digit of 1 for the month of January has four instances: 01, 11, 21, 31.
Here are four examples:
1016 = January 1, 2016
1026 = January 11, 2016
1036 = January 21, 2016
1056 = January 31, 2016
Now try a first digit of 5, with instances of 5, 15 and 25:
5016 = January 5, 2016
5036 = January 15, 2016
5046 = January 25, 2016.