Into how many terroirs are the four principal regions divided?

• A. 12
• B. 16
• C. 24
• D. 17

Answer: (D)

Terroir is the interplay of soil, subsoil, slope, drainage, climate, and farming practices that gives a vineyard site its distinct character. In Champagne, the four principal regions—Montagne de Reims, Vallée de la Marne, Côte des Blancs, and Côte des Bar—are subdivided into 17 distinct terroirs. This finer breakdown captures how variations in soil and microclimate across the area influence grape composition, acidity, structure, and aroma, which winemakers consider when blending and shaping a Champagne’s style. For example, chalky soils and higher sites in parts of the Côte des Blancs tend to yield wines with higher acidity and mineral notes, while other terroirs in Montagne de Reims contribute more body and aging potential, and the river-valley terroirs can add elegance and fruitiness. Knowing there are 17 terroirs helps explain why Champagnes from different corners of these four regions can have noticeably different character within the same house style.