Which winery did Manfred Krankl found?

Manfred Krankl is widely recognized as the founder of Sine Qua Non (often abbreviated as SQN). This winery, established in the late 1990s in California, has gained a reputation for its small production of high-quality wines that have garnered immense critical acclaim. Sine Qua Non is particularly known for its Rhône varietals and unique blends, often made with a focus on creativity and experimentation in winemaking.

In contrast, the other wineries listed, such as Caymus Vineyards, Buena Vista Vineyards, and Chateau Montelena, were founded by different individuals and have distinct histories and styles. Caymus is known for its Cabernet Sauvignon, Buena Vista is one of California's oldest wineries, and Chateau Montelena rose to fame during the 1976 Judgment of Paris wine competition. None of these options are connected to Manfred Krankl, making SQN the correct association.