Loosen cage by turning the tab 6 half turns. Release it enough to fit over the lip of the bottle but do not take it off yet. Be sure to keep your hand holding both the cork as well as cage in position now that it’s no longer secure.
Hold bottle at a 45 ° angle and also start to turn the base of sparkling wine container while holding the cork and cage strongly. You’ll locate this much easier and safer compared to trying to turn the cork/cage.
Apply enhancing tension to hold the cork/cage as you feel the cork start to push out with the bottle tension. Not to fret, if you do this procedure gradually, the cork will certainly pop out with merely a little ‘fssssszzz’