Lefou
Danged rascally furt
- Joined
- May 1, 2016
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Leaving the beer longer in the primary fermenter doesn't result in lower FG's. When the yeast are done, they're done.
Extra time in primary can help "clean up" fermentation byproducts of a quick fermentation, though. Depending on the environment (temperature, yeast health, gravity) of your wort some yeasts are much better at scrubbing byproducts of yeast metabolism when staying in primary just a bit longer.
Starting out, I was definitely under pitching some of my higher gravity worts and getting "green apple" flavors. A final gravity of 1.004 from 1.052 is great for a well-carbed, dry beer. It indicates a highly fermentable wort and vigorous yeast.