Does Beer from Germany need a hechsher?
In general does liquor or beer need a hechsher?
In general if the beer is unflavored and is produced in a factory that produces only unflavored beer then it wouldn’t need a hechsher (aside for issues of chodosh when applicable). Please see the following links. http://www.crcweb.org/kosher_articles/Beer.php and https://www.star-k.org/articles/kashrus-kurrents/2183/beer-halacha-clarifying-the-kashrus-of-beer/ according to the Star-K research, German beers contain only permitted ingredients, (assuming that they aren’t flavored).
Liqueur needs a hechsher because it is flavored. Liquors often do need a hechsher. Please see the following link for a comprehensive list of various alchoholic products and what can and can’t be used. http://www.crcweb.org/LiquorList.pdf