New Glarus Unplugged Enigma 5.5% (2010)

 
Also known as New Glarus Thumbprint Series Enigma
Commercial description
A few times a year, we will cut Dan loose to brew whatever he chooses, uncensored, uncut, unplugged. Always handcrafted, this beer is brewed for the adventurous soul. This is a very limited edition and we make no promises to ever brew this style again. A complex and intriguing original. The mystery began with wild yeast spontaneously fermenting a rich treasure of malted barley and cherries. Unlined Oak casks breathe deep vanilla hues and chords of smoke into this sour brown ale. Our Master Brewer has forged a smooth garnet tapestry that defies description. Wander off the beaten path.

2006 vintage - 7%
2010 vintage - 5.5% (separate entry)
You can tell the vintages apart as the 2010 bottles have the © symbol to the left of the UNPLUGGED banner while the 2006 does not.
Proceed to the aliased beer...

New Glarus Thumbprint Series Enigma

The brewer markets this same or near-same product by more than one names. This can be the result of a brewer distributing this beer under different names in different countries, or the brewer simply changing the name, but not the recipe at different points in time.