What is the main grape variety in the production of Brunello di Montalcino DOCG?

Brunello di Montalcino DOCG is renowned for its high-quality red wines primarily made from the Sangiovese grape variety. Sangiovese, especially in its Brunello expression, is known for producing wines with elegance and complexity, characterized by high acidity, firm tannins, and flavors that evolve beautifully with age. Brunello di Montalcino has stringent regulations that require the wine to be made from 100% Sangiovese grapes, which contributes to its unique taste profile reflective of the terroir of Montalcino in Tuscany.

The other grape varieties mentioned, such as Merlot, Syrah, and Garganega, are either not permitted in the production of Brunello or do not reflect the traditional style and regulations governing this prestigious DOCG. Hence, Sangiovese is indeed the correct and fundamental grape variety that defines the identity and character of Brunello di Montalcino wines.