Mineral operates in California's Sierra Foothills, where the Calaveras County terroir yields structured, age-worthy reds. The winery's Cabernet Franc expresses the region's mineral-rich soils and diurnal temperature swings, achieving depth and complexity. Petite Sirah—a variety that thrives in the Sierra Foothills' warm days and cool nights—appears in Tres Vignerons, a wine that captures the region's capacity for bold, tannic expression. La Calavera rounds the portfolio, drawing on the county's volcanic geology and elevation. Wine Enthusiast has rated across the range, recognizing the technical precision evident in each release. The winery's focus remains on varietals suited to Calaveras County's distinctive climate and soil.