Final answer:
Jura "Vin Jaune" must be matured in barrels for 6 years and 3 months, allowing it to develop its distinctive flavor profile and deep golden color.
Step-by-step explanation:
The Jura "Vin Jaune" must be matured in barrels for a specific period before it is bottled. According to the regulations governing this unique wine, the mandatory maturation period in barrels is 6 years and 3 months. Throughout this aging process, the wine develops its characteristic flavors, including a rich, nutty taste and deep golden color. The extended maturation is part of what makes Vin Jaune one of the most distinctive wines of the Jura region in France. This period allows the wine to evolve under a veil of yeast, known as 'voile', which contributes to its unique taste and longevity.