What is a Bag-in-Box?
A. A Bag-in-Box, also known as BIB or, in the wine industry, boxed wine and wine cask, is a corrugated cardboard box that holds a plastic bag inside. The plastic bag holds the wine, which is dispensed by a tap. The tap-and-bag system allows for the dispensing of the wine without air being allowed into the bag; this helps keep wine fresh by preventing oxidation.