Originally Posted by dranderson
With my floor corker my corks rest about a 16th below the lip of the bottle. Should it be flush? Can someone here explain bottleneck seating? why or why not?
Flush with the top of the bottle is best because:
Too high- less of the cork seals the bottle, possibly causing wine to bleed through or worse, oxygen to bleed in.
Too low- creates a lip inside the neck which can collect debris and moisture, possibly causing mold or mildew to grow.
On the up side, this is a relatively minor issue and one I would ONLY stress over for long term ageing bottles (4+ years). :-)