Merenzao

Merenzao traces its origins to the Jura region of eastern France, where it is called Trousseau, a name derived from the resemblance of its berry clusters to a bride's trousseau. It spread to the Iberian Peninsula at least 200 years ago, with monks traveling the Camino de Santiago possibly responsible for its introduction. Today the grape goes by a remarkable number of synonyms: Trousseau Noir, Bastardo, María Ordoña, Maturana Tinta, Verdejo Negro, Tintilla, Abrunhal, Tinto Lisboa, and Gros Cabernet, depending on the country and region.

• Named Trousseau in Jura because its clusters resembled a bride's trousseau
• Possibly introduced to Spain and Portugal by monks traveling the Camino de Santiago
• Cultivated on the Iberian Peninsula for at least 200 years
• Phylloxera eradicated much of the variety from Rioja in the 19th century

DNA profiling has revealed that Merenzao shares a parent-offspring relationship with Savagnin, one of Jura's most iconic white grapes. It also sits as a sibling to both Chenin Blanc and Sauvignon Blanc, placing it within a genetically distinguished family of French varieties. These relationships underline its Jura origins and help explain its affinity for cool, continental growing conditions.

• Parent-offspring relationship confirmed with Savagnin by DNA profiling
• Sibling relationship established with Chenin Blanc and Sauvignon Blanc
• Genetic evidence firmly supports the Jura region as its place of origin

Merenzao is a cool-climate variety that demands careful site selection. It ripens early and produces small, compact, conical clusters of blackish-blue berries with medium-thick skins and high sugar content. The compactness of the bunches makes the variety sensitive to botrytis, and it requires more sunlight than most varieties to ripen completely. It is also sensitive to spring frosts. Yields are low, and the vine shows scant overall development. It performs best on warm gravel soils and clay-limestone soils.

• Early ripening with small, compact clusters highly susceptible to botrytis
• Requires exceptional sun exposure to achieve full ripeness
• Thrives on warm gravel and clay-limestone soils
• Low yield variety with sensitive spring frost risk

Merenzao remains a rare variety across all three countries where it is grown. In France, it represents only 5% of Jura vineyard area, appearing in Arbois and Côtes de Jura appellations as one of five principal red varieties. In Spain, just 27 hectares were recorded in 2015, with only 12 of those in Galicia despite authorization in both Ribeira Sacra and Valdeorras DOPs. In Rioja DOCa, it is authorized under the name Maturana Tinta. Portugal holds the largest plantings at 1,218 hectares, where it is known as Bastardo and has historically been used in port wine production, particularly in the Dão and Douro regions.

• Represents only 5% of Jura vineyards in France
• Just 27 hectares recorded in Spain as of 2015, with 12 in Galicia
• Authorized in Ribeira Sacra, Valdeorras, and Rioja DOCa (as Maturana Tinta)
• Portugal holds 1,218 hectares, primarily in Dão and Douro; historically used in port

Merenzao produces delicate, light to medium-bodied red wines with a deep cherry-red color. Floral aromas of rose petals lead the nose, followed by red and black fruit flavors including cherries and blackberries, along with spiced and earthy notes. The wines carry high alcohol, averaging 13.6%, with relatively low acidity at 5.1 g/L on average. In Galicia, the grape is frequently blended with Mencía. In Jura, single-varietal Trousseau bottlings showcase its forest fruit character and delicate structure.

• Deep cherry-red color with floral rose petal aromas
• Flavors of cherries, blackberries, spice, and earth
• High average alcohol of 13.6% with low acidity (5.1 g/L average)
• Frequently blended with Mencía in Galician wines