Didier Grappe is a cult producer who makes high energy, zero so2 wines from a very small vineyard surface in Saint Lothian.
In response to the changing climate, whereby even sub-alpine regions like the Jura are faced with warmer vintages and more extreme weather, Grappe has put some efforts into cultivating the local hybrid grape variety Seyve Villard as a way to future-proof his holdings. Hybrids are banned by French Appellation authorities, though these varieties are disease resistant and can hold their acidity in warm vintages.
Grappe has introduced the variety here with a pet nat that exemplifies the explosive acidity of the variety. Cool stuff.