Cork's elasticity, impermeability, and chemical stability means that it seals the bottle without contaminating the wine, even when it must mature for many years. The Romans also used cork for the soles of shoes and for floats for fishing nets.

Auctions for wine corks sell in lots as small as 20 and as large as 500. The wine bottles usually sell for about 50 cents per bottle, but fancier bottles can fetch near $5.00 each (hint: Cobalt blue bottles!). Wine corks, however, generally sell for about 10 cents each.

In the early 21st century, the problem of cork taint became prevalent, leading many producers to stop using corks in favor of alternatives. Screw caps became especially prominent in Australia and New Zealand by 2010. Most cork was sourced from around the Mediterranean Basin, far from the Oceanian countries.

1) Other than wine or beer, what is bottled using corks? - High-end bourbon, quite often. High-end olive oil, on occasion.