(NBC) - Boxed wine has been around since the 1960s, but it's starting to look and taste a lot different. There are now more than 50 companies selling cardboard carton versions of some of your favorite bottles, but boxed wine seems to be more of a conversation ender for many cork-sniffers.Whole Foods' wine specialist Chris DeMers admitted it won't be easy convincing customers it's OK to drink Chardonnay or Cabernet from a tap.While boxed wine seems to be improving in taste and popularity, DeMers said bottled wine shouldn't feel threatened.