Walk into any wine shop and the white wine section can feel overwhelming. Dozens of bottles line the shelves, each promising something different. But beneath the marketing and fancy labels, a handful of grape varieties dominate the global white wine market. The big three that rule the market Chardonnay sits at the top. This grape adapts to different climates and winemaking styles better than almost any other variety. You’ll find crisp, mineral-driven Chablis alongside rich, buttery California Chardonnays. Both come from the same grape, but the differences in terroir and technique create wines that taste completely different. Sauvignon Blanc follows…