Retsina

Retsina is a Greek white resinated wine, which has been made for at least 2,000 years. Its unique flavor is said to have originated from the practice of sealing wine vessels, particularly amphorae, with Aleppo pine resin in ancient times. Before the invention of impermeable glass bottles, oxygen caused many wines to spoil within a year. Pine resin helped keep air out, while infusing the wine with... (Wikipedia)