Which winemaker started their career in the lab for Robert Mondavi?

Helen Turley, a prominent winemaker, began her career in the lab at Robert Mondavi Winery, where she gained valuable experience and insight into winemaking processes. Her time in the lab allowed her to develop a strong foundation in understanding the scientific aspects of viticulture and enology, which she later applied as a successful winemaker. Turley is well-known for her focus on producing high-quality wines, particularly from California's Napa Valley, including her own label, Turley Wine Cellars, which specializes in Zinfandel and other varietals. This background contributes to her reputation in the wine industry, notably shaping a generation of winemaking techniques.

In contrast, the other individuals mentioned made significant contributions to winemaking but did not start their careers in the lab at Robert Mondavi. Heidi Barrett is recognized for crafting acclaimed wines like Screaming Eagle, Justin Smith is known for his work at Saxum Vineyards, and Bo Barrett has played a vital role at Chateau Montelena. While all have their unique experiences and achievements, it is Helen Turley’s early career path that aligns with the origin stated in the question.