Wikipedia about Vin Jaune, quite a special wine from Jura:
The wine acquires its characteristic yellow color and nutty flavors as it ages for the requisite time of six years and three months, the time that must elapse between harvest and bottling. After the allotted time, only about 62% (sic!) of the original wine remains. The vin jaune is then bottled in special squat bottles that hold 62 cl(sic!) (21 ounces), called clavelins. Historically the bottle size alludes to the amount of wine left over after six years of aging and evaporation.