Besides drainage, chalky soil in Champagne also contributes to the wine by:

• A. Reflects sunlight
• B. Retains water
• C. Adds minerality
• D. All of the above

Answer: (D)

Chalky soils shape Champagne wine in several interacting ways beyond drainage. Their highly porous, calcareous makeup lets water move through quickly, which helps prevent waterlogging while still providing some moisture buffering for vines during drier periods. The calcium carbonate content also influences the vine’s uptake of minerals, contributing to a sense of minerality in the wine that many describe as characteristic of wines from calcareous soils. Additionally, the pale color of chalk can reflect sunlight, increasing light exposure around the vines and subtly warming the canopy in a cool climate, which can help with ripening while preserving acidity. Taken together, these effects align with all of the above.