According to RICHARD EHRLICH, 1.6 billion units of wine packaged in Tetra Pak have been sold around the world. And while Ehrlich admits that it's 'easy to sniff and sneer', he says that the medium has a number of benefits: 'Tetra Pak offers the possibility of packaging wine in a range of convenient sizes'; 'it is perfect if you value ease of storage over elegance of presentation'; 'it's a pleasure to open if you don't require the popping of a cork or even the turning of a screwcap'; and 'it makes it easy to store leftovers without exposure to oxygen'.