Verified on Blumstein's current official beer shop. ABV remains UNKNOWN because the retrieved official text does not state it.
One tap, no account
Had Frintshauft Zitzung? Stamp it.
Opens the Passport with this beer already stamped — no login, no searching for it again.
01
Follow the money
Who owns this beer
Blumstein Brewing Co. is recorded as independently owned — no parent company is held above it in the archive.
Not established
Ownership has not yet been established for this brewery. That is a gap in the research, not a finding of independence.
02
4 more from this brewery