Yeast cake (trub)
Term from the Brauwerkstatt brewing glossary, category “Fermentation and yeast”.
Explanation
The sediment in the fermenter after fermentation: yeast, protein and hop debris. It should stay behind when racking and bottling. You can reuse the yeast from it for the next batch.
Test your knowledge
What is the whirlpool after the boil for?
- It adds oxygen to the wort
- It propagates the yeast
- The trub collects in the centre so it can be separated
Show answer
Correct: The trub collects in the centre so it can be separated. Stirring vigorously creates a vortex. Trub and hop debris settle as a cone in the middle.