Pressed or eo-called German yeast is made in a similar way to ordinary brewer's yeast, but it is the yeast derived from the fermentation of a mash which is afterwards distilled for whiskey. The yeast is collected from the surface of the fermented liquid by a scraper, and is then put through a filter press which presses out the greater part of the water, leaving a still', pasty mass which is cut up into 71b., 111b., or 281b. lumps and sewn up in bags.