Cabernet Franc

Cabernet Franc is one of the major black grape varieties worldwide. It is principally grown for blending with Cabernet Sauvignon and Merlot in the Bordeaux style, but can also be vinified alone - as in the Loire's Chinon. In addition to being used in blends and produced as a varietal in Canada and the United States it is made into ice wine there.

Cabernet Franc is lighter than Cabernet Sauvignon, making a bright pale red wine and contributing finesse and a peppery perfume to blends with more robust grapes. Depending on growing region and style of wine, additional aromas can include tobacco, raspberry, bell pepper, and cassis, sometimes even violets.

Records of Cabernet Franc in Bordeaux go back to the end of the 18th century; it was planted in Loire long before that. DNA analysis indicates Cabernet Franc is one of two parents of Cabernet Sauvignon, a cross between it and Sauvignon Blanc.

In general, Cabernet Franc is very similar to Cabernet Sauvignon, but buds and ripens at least a week earlier. This trait allows the vine to thrive in slightly cooler climates than Cabernet Sauvignon, such as the Loire Valley. In Bordeaux, plantings of Cabernet Franc are treated as an "insurance policy" against inclement weather close to harvest that may damage plantings of Cabernet Sauvignon. Its early budding does pose the viticultural hazard of coulure early in the growing season. The vine is vigorous and upright, with dark-green, 5-lobed leaves. The winged bunches are elongate and small-medium in size. The berries are quite small and blue-black in color, with fairly thin skins. The Cabernet Franc grapevine is more prone to mutation than Cabernet Sauvignon, less so than Pinot noir.

Cabernet Franc can adapt to a wide variety of vineyard soil types but seems to thrive in sandy, chalk soils, producing heavier, more full bodied wines there. In the Loire Valley, terroir based differences can be perceived between wines made from grapes grown in gravel terraces versus tuffeau slopes. The grape is highly yield sensitive, with over-cropping producing wines with more green, vegetal notes.

In France, Cabernet Franc is found predominately in the Loire Valley and in the Libournais region of Bordeaux. As of 2000, it was the sixth most widely planted red grape variety in the country. Other areas with significant plantings include the Bergerac and Madiran Appellation d'origine contrôlée (AOCs). By the early 20th century, there were nearly equal plantings of Cabernet Sauvignon and Cabernet Franc in Bordeaux with around 25,000 acres (10,000 ha) by the late 1960s. Most of these plantings were along the right bank of the Gironde in the Fronsac, St-Emilion and Pomerol regions. Towards the end of the 20th century, even though plantings of Cabernet Sauvignon had rapidly increased in Bordeaux to a 2 to 1 ratio in proportion to Cabernet Franc, plantings there were over 35,360 acres (14,310 ha) of the latter, nearly half of the country's total 88,900 acres (36,000 ha).

References

1. Discovery Channel: “DNA analysis reveals mysterious past of Cabernet Sauvignon”
2. Cabernet Franc
3. J. Robinson (ed) "The Oxford Companion to Wine" Third Edition pg 118-119 Oxford University Press 2006.
4. Oz Clarke Encyclopedia of Grapes pg 44-45 Harcourt Books 2001.
5. Radden, Rosemary. "Grapes and Wines of the World". The State Library of South Australia, GPO Box 419, Adelaide SA 5001. Retrieved 2007-05-05