The partially fermented grape juice with an alcohol content of about 5-6 volume percent. The name is derived mainly from the colour ("white as a feather") or from the feathery flakes in the cloudy must. This stage of the new wine is also called Bitzler (the borders are fluid).
As a preliminary stage, a distinction is made in Rheinhessen the "Bresmer" . While this is still sweet, the Federweisser already tastes slightly sour and is more similar to the young wine. Federweisser is sold in lightly corked bottles in the wine taverns, restaurants and little stand on the streets in autumn. Its "effects" are similar to those of the Bremser.