Which two regions are known for producing sweet white wines in Bordeaux?

Sauternes and Barsac are renowned in Bordeaux for their production of high-quality sweet white wines, primarily made from the Sémillon and Sauvignon Blanc grape varieties. The unique climatic conditions in these regions, particularly the influence of the nearby Ciron River, create an environment conducive to the development of noble rot (Botrytis cinerea). This fungus concentrates the sugars in the grapes, resulting in the rich, complex flavors that are characteristic of these sweet wines.

Sauternes, in particular, is well-known internationally for its luscious dessert wines, while Barsac, although producing similar wines, has its own AOC designation. Wines from these areas often exhibit remarkable depth of flavor with notes of apricot, honey, and a vibrant acidity that balances the sweetness. This distinguishes them as exceptional examples of sweet wines within the broader Bordeaux wine landscape.