Wine vessels kept them fresh and free from a vinegar smell. In medieval Europe, the Roman Catholic Church supported wine because the clergy required it for the Mass. Monks in France made wine for years, aging it in caves. An old English recipe that survived in various forms until the 19th century calls for refining white wine from bastard—bad or tainted "bastardo" wine. The English word "wine" comes from the Proto-Germanic "*winam", an early borrowing from the Latin "vinum", "wine" or "(grape) vine", itself derived from the Proto-Indo-European stem *"win-o-" (cf. , "gini"; Ancient Greek: "oinos"; Aeolic Greek: "woinos"; Hittite: "wiyana";
French wine spreading Christianity and planting vineyards. During the Middle Ages, monks maintained vineyards and, more importantly, conserved wine-making knowledge and skills during that often turbulent period. Monasteries had the resources, security, and motivation to produce a steady supply of wine both for celebrating mass and generating income. During this time, the best vineyards were owned by the monasteries and their wine was considered to be superior. Over time the nobility developed extensive vineyards. However, the French Revolution led to the confiscation of many of the vineyards owned by the Church and others. The advance of the French wine industry stopped abruptly