What is a defining characteristic of the best vineyards in Alsace?

The defining characteristic of the best vineyards in Alsace is the presence of steep slopes, particularly those that are oriented to maximize sunlight exposure. In this region, vineyards located on these slopes benefit from excellent sun exposure throughout the growing season, which is crucial for the ripening of grapes. The angles of the slopes allow for better air drainage and thus reduce the risk of frost, while also enhancing the quality of grape flavors through concentrated sunlight.

The geography of Alsace, combined with a cool climate, means that these steep slopes can lead to optimal conditions for growing varietals like Riesling, Gewürztraminer, and Pinot Gris. The combination of sunlight, drainage from slopes, and the ability to capture different microclimates is what contributes to the overall excellence of wine produced in this region.

In contrast, flat terrain may offer good drainage but doesn’t provide the same beneficial exposure to sunlight that steep slopes do. While high elevation with southern exposure can be beneficial, it is primarily the steep slopes that are most notably linked to the success of Alsace’s vineyards. Proximity to rivers can influence climate and soil composition, but it is not as defining a characteristic as the slope orientation for quality vineyards in Alsace.