hmmmm
when you added the sorbate and sulphite....did you then age it a little more to be sure there was no further activity?
or straight to bottle...there is no guarantee that sorbate and sulphite will kill the yeast off completely, this is why you must age a little more before bottling, so we are sure it has stopped fermenting...especially if more sugar is added for sweetening.
I suspect a re-ferment has occurred.
could be CO2 release, but it's doubtful that there would be enough to blow a cork
there are no "inevitable" problems, you need to revisit your basics and get a good regimen in place for future batches. These things always happen for a reason, and if you develop good technique, and good practices, then these "episodes" will become less and less
regards
Bob
when you added the sorbate and sulphite....did you then age it a little more to be sure there was no further activity?
or straight to bottle...there is no guarantee that sorbate and sulphite will kill the yeast off completely, this is why you must age a little more before bottling, so we are sure it has stopped fermenting...especially if more sugar is added for sweetening.
I suspect a re-ferment has occurred.
could be CO2 release, but it's doubtful that there would be enough to blow a cork
there are no "inevitable" problems, you need to revisit your basics and get a good regimen in place for future batches. These things always happen for a reason, and if you develop good technique, and good practices, then these "episodes" will become less and less
regards
Bob
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