Natural wine
By method
Natural wine is a movement, not a legal class. Growers farm organically, ferment with wild yeast and add little or no sulphur. Expect cloudiness and bottle variation.
Base grapes
More in by method
Sources
Facts: Wikipedia, Natural wine (CC BY-SA 4.0) and Wikidata Q3559389 (CC0). The description, the grape list and the bands are ours.