Languedoc-Roussillon is known for its unique local varietals, but it has also seen an increase in the use of American varietals in the region in recent years. American grape varieties were introduced to the region to improve disease resistance and to increase yields, but they also brought unique flavor profiles. Here are some of the most common American grape varieties used in the region:

Merlot: This red grape originated in Bordeaux, but has become popular in Languedoc-Roussillon for its disease resistance and ease of cultivation. Wines produced from Merlot are often fruity and sweet, with aromas of cherry and cassis.

Cabernet Sauvignon: This red grape variety also originated in Bordeaux, but has become popular in Languedoc-Roussillon for its disease resistance and ease of cultivation. Wines produced from Cabernet Sauvignon are often tannic and full-bodied, with aromas of cassis and pepper.

Chardonnay: This white grape originated in Burgundy, but has become popular in Languedoc-Roussillon for its disease resistance and ease of cultivation. Wines produced from Chardonnay are often dry and aromatic, with aromas of apple and pear.

Sauvignon Blanc: This white grape also originated in Burgundy, but has become popular in Languedoc-Roussillon for its disease resistance and ease of cultivation. Wines produced from Sauvignon Blanc are often dry and aromatic, with aromas of grapefruit and mint.

It is important to note that these American varietals are often used in conjunction with local varietals to produce unique wines that combine the disease resistance and yield benefits of these American varietals with the unique flavors of local varietals.