Finally found this one! Here's my transcription of a performance on Facebook (link) by vocal harmony group Windborne. I'll post the full text of the Facebook post below. A little disappointing after all this searching that there's scarcely more of the song than included by the original poster.

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Windborne - October 2nd, 2019

[SOUND ON] for a special song we wrote during sound check for our show tonight at Boundary Bay Brewery in Bellingham WA! ?????? #icanbrew

7pm in the Mountain Room -- Come on down!

Well I likes my whiskey and I likes my beer
I'll drink 14 pints and I'll still feel queer
I can hold my liquor well as any man
And I'll sing and dance as long as I can

I can brew, boys, I can mash it out
I can brew the beer: lager, ale, and stout
I can brew, boys, ale that's golden fine
I'm a brewer, lad, on the bottling line