Hi shibolet,
i think,homebrew shops in Germany are rare.
-Mostly the homebrewers buy their brewing ingredients in onlineshops or
directly
at the breweries(if it´s possible).
If You interested for a meeting with me,i am at the Brau beviale at Friday
the 12th of November!
Otherwise enjoy Your time in Germany!
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die Dinge sind so,wie man Sie sieht...