I have searched and most times an extremely fast ferment is attributed to high wort temperatures. I brewed Jamils blond and pitched on a yeast cake from a previous batch of the same beer. Wort cooled to 67 degrees or so and drained onto the cake at about 4PM.. within a half hour I had kraussen...within an hour or two it was going crazy...next morning the kraussen had fallen. I took a gravity reading that afternoon and it was at the expected FG...so less than 24 hours with controlled temps. Will this negatively affect the beer? I have already been told in another thread that the entire yeast cake was a mistake