| Term | Definition |
|---|---|
| False Bottom | The slotted or perforated, liftable plates in the Bottom straining tank, forming a support for the grains, a few inches above real bottom of strainer.
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| Fermentation | Conversion of sugars into ethyl alcohol and carbon dioxide, through the action of yeast.
|
| Filter | The removal of designated impurities by passing the wort through a medium. Yeast in suspension is often targeted for removal.
|
| Filter Mass | Prepared cotton used for beer filtration, at times containing synthetics.
|
| Final specific gravity | Specific gravity of a beer when fermentation is complete (that is, all fermentable sugars have been fermented).
|
| Fining | An aid to clarification: a substance that attracts particles that would otherwise remain suspended in the brew, for instance, isinglass.
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| Forcing | Undue speeding up of process, especially the germinating process.
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| Fore Masher | Device to moisten the crushed malt before entering the mash tank; also called "Pony" masher.
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| Friability | Ease of pulverizing, mellowness.
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| Fusel Oil | A mixture of amyl alcohol, isoamyl alcohol and some lower alcohol and their esters.
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