It comes from the French: myz.le. It derives its name from the
French museler, to muzzle and is a wire cage that fits over the
cork of a bottle just below the annulus, of champagne, sparkling
wine, or beer to prevent the cork from emerging under the
pressure of the carbonated contents. The muselet often has a
metal cap (plaque) incorporated in the design which may show the
drink maker's emblem.
muselet
and plaque
Muselets are also known
as wirehoods or Champagne wires. Another term sometimes used is
agrafe. In Champagne, this was a large metal clip used to secure
the cork before capsules were invented, typically during the
second fermentation and aging in bottle. A bottle secured with
this clip is said to be agrafé. Some French refer to muselet as
an agrafe (French for staple), a cork, and a disk. Corks have
been used as stoppers since about 1718.
agrafe
When opening a bottle
of champagne you need to remove the muselet that sits on top of
the cork. It is loosened by removing the foil and turning the
wire counter-clockwise. It takes exactly six turns, or three 360
degree turns to remove the muselet.
It is unclear on who
invented the muselet, but is is clear that Dom Perignon and
Adolphe Jacqueson made important contributions. Dom Perignon is
believed to have made important improvements to the production
process of champagne. Including a wire caging on the cork. At
that time many bottles were lost during production because the
cork or the bottle was unable to withstand the pressure of the
Champagne. Dom Perignon’s invention made it better. During 1844
Adolphe Jacqueson made the muselet in the shape and form we know
today.
Incidentally, collecting the caps of Champagne and other sparkling wine is
called Placomusophilia. The small,
dome-shaped, often colorfully decorated metal cap that
protects the outer end of the cork are called
'plaque' or 'plaque de muselet'.