Why the difference in ABV for the same beer if BB aged?

Disappearing beer is not fun

 

and some practical considerations: higher ABV beers are less likely to get infections. They have bolder flavors that can stand up to the wood or whiskey from the barrel. They are also easier to market at higher prices. The economics of storing beer in a barrel and having it take up your real estate for a year is what one would consider a highly value-added product. Brewers need to see some money returned for all their hard work and I think that's easier to market as a higher ABV beer.

 

The term generally refers to the loss of wine or distilled spirits from oak barrels. The concept may also apply to beer but it is certainly a borrowed term.

 

I was just thinking about "the angel's share" from when I did the Jameson tour a few years back

 

Checkout Speedway and ALL variations. 12% baby ! They're all 12%! Miracle!!! ( or they don't test them, ever. )