A copper still is a distillation vessel constructed from copper, used to produce spirits including gin, whisky, brandy, and rum. Copper is preferred over stainless steel for traditional craft distillation because of its catalytic interaction with the spirit during the run: copper binds and removes sulphur compounds that would otherwise carry through to the final liquid, and copper's high thermal conductivity allows precise control of the boiling profile.
Tannenblut is distilled in a copper still in the Black Forest. The single distillation run for the entire 3,000-bottle Bereshit Series is conducted in this still, with heads and tails cut by hand rather than by automated sensor.