No, it’s not how you do it in Germany.

Germany has restrictions on kids buying alcohol too:

Beer, wine, wine-like beverages or sparkling wine or mixtures of beer, wine, wine-like beverages or sparkling wine and soft drinks, must not be sold to Children and Adolescents below the age of 16 years,

other alcoholic drinks or food items that contain other alcoholic drinks in more than insignificant quantities must not be sold to Children and Adolescents,

nor must their consumption by said persons be tolerated.

- Jugendschutzgesetz (Protection of Young Persons Act)

Where is this massive black market for moonshine?