The bottle is then riddled, so that the lees settles in the neck of the wine bottle...
Manual riddling is still done for Prestige Cuvées in Champagne... mechanised riddling equipment (a gyropalette) is used instead.
NOM NOM NOM! For all I know this is a fake. The native land snails are known to be carnivorous but I didn't know that anyone had filmed it. It looks pretty real.
Anyway be more careful around your next plate of escargot.