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lautering

n. The step or process in brewing beer which separates the mash into clear liquid wort and grain. vb. (present participle of lauter English)

Wikipedia
Lautering

Lautering is a process in brewing beer in which the mash is separated into the clear liquid wort and the residual grain. Lautering usually consists of 3 steps: mashout, recirculation, and sparging.