Winery Contact: Reach out directly to Weingut Gross (Vino Gross). Wineries often have information about specific vintages, including details about the grape variety, winemaking techniques, and characteristics of the wine.

Wine Merchants or Specialty Shops: Contacting wine merchants, specialty wine shops, or distributors that carry Weingut Gross wines may provide insights into the 2016 Colles Sauvignon Blanc Vino Gross Magnum. Staff at these establishments might have information about the wine's availability and specific details.

Wine Reviews and Ratings: Look for reviews from reputable wine critics or publications. Wine critics often provide detailed tasting notes and scores for wines, offering insights into the quality and characteristics of specific vintages.

Weingut Gross's Official Website: Check the official website of Weingut Gross. Wineries typically provide information about their various wines, including details about specific vintages, grape varieties used, and winemaking practices.

Official Wine Databases: Explore official wine databases or platforms that catalog information about different wines. These sources may provide technical details about the 2016 Colles Sauvignon Blanc Vino Gross Magnum.