Basically, Zork (or Zork Spk in this case) is an alternative closure I've seen predominantly used on some of Australia's not so expensive sparkling wines, where retention of fizz from first glass to last is desired, although there is a Zork available for still wines as well. The idea behind Zork is to deliver a resealable and taint free closure, like the screwcap, albeit one which retains the 'pop' wine drinkers have come to love when extracting cork. As a consumer, I can say the 'pop' is present and it reseals well (almost all my Currency Creek note was scribbled on day two - the freshness and effervescence had barely changed), but I feel the romance has been lost somewhat. It looks rather bold and manufactured compared to the more natural look of cork.
Despite its ungainly appearance, it's actually quite user friendly and serves its purpose well, and I'll probably hold onto mine, because it seems to be reusable and transferable across Australian sparkling wines. Time will tell how long I hold onto it for.
L: Screwed tight and sealed. R: Unscrewed and ready for popping.
Black Shiraz? Zork? Nah, I just put it there. Nice fit though.
And Pol too? Nope. No such luck. Clearly there's some cultural differences at play. Fits like an elephant into a Porsche.