Remuage

Remuage – the shifting of the yeast sediment.
In use with Champaign, the depot is moved to the neck of the bottle step by step during 8 weeks, thus making it easier to remove.
This was done by a remeur, which could turn up to 30.000 bottles of wine a day.
Nowadays it is done by a gyropalette, a machine which does the same thing much faster: in 8 days.