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SOMMWINE GRAPE LIBRARY
Grolleau
Also known as Grolleau noir (black-berried designation used to distinguish it from the separate grey mutation Grolleau gris), Groslot (regional Loire name documented by InterLoire; not an officially recognized France/EU synonym)
Grolleau is a black-berried Loire grape whose modern role is especially visible in rosé. Plantgrape describes it as giving light, lightly coloured wines and notes that careful crop control can also yield supple, fruity reds. It is the majority grape in Rosé d’Anjou, an appellation that also permits other varieties and has a gently sweet regional style. Grolleau gris is a distinct grey-berried mutation, not a spelling variant of the black grape.
ColourRed
ClassificationVitis vinifera L. subsp. vinifera; black-berried wine grape.
Typical bodyPlantgrape describes Grolleau wines as light; controlled-yield red wines can be supple. This is a typical technical description, not a guaranteed body for every wine.
Typical acidityNo universal acidity value is asserted. Regional Rosé d’Anjou rules and descriptions emphasize freshness balanced against residual sweetness; wine composition varies by harvest, blend and appellation.
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At a Glance
Loire rosé: Plantgrape lists rosé/grey and sparkling wine among principal uses; Grolleau is the majority grape in Rosé d’Anjou according to INAO, though the appellation permits other varieties.
Typical tannin: No cultivar-wide numeric or fixed level asserted. The documented rosé styles are light; red extraction and ripeness affect tannin.
Aromas and Flavours
- No universal grape-wide aroma fingerprint is asserted. Official Rosé d’Anjou material describes the appellation wine as fruit-led and slightly sweet; that is a regional blend/style, not a guaranteed Grolleau-only tasting note.
Where It Grows
- Touraine (probable origin)
- Anjou / Rosé d’Anjou
- Loire Valley (rosé, sparkling and light red uses)
- France
Climate and Winemaking
The variety is associated with Touraine/Anjou in the Loire Valley. The sources reviewed do not support a cultivar-specific optimum climate claim; do not infer one from regional plantings.
Plantgrape describes a fertile vine requiring short pruning and low crop load. Young shoots are vulnerable to wind; production can remain reasonable after spring frost. It is susceptible to peduncle rot, excoriose and millerandage. Budburst is reported one day before Chasselas and maturity in the second period, about two weeks after Chasselas, in the reference conditions used by Plantgrape.
Yield management is important: Plantgrape links well-controlled yields to supple, fruity red wines. Its main reported uses are rosé/grey and sparkling wine. In Rosé d’Anjou, permitted varieties and minimum residual sugar are governed by the appellation specification; do not generalize those rules to other Loire rosés.
Food Pairings
- Editorial suggestion: fruit-led Grolleau rosé with charcuterie, salads or grilled vegetables; for Rosé d’Anjou, account for its gentle sweetness. This is pairing advice, not a biological property of the cultivar.
Ageing Potential
- No general bottle-ageing potential is asserted. Plantgrape’s light, low-colour style and regional rosé focus support drinking by style rather than a grape-wide ageing rule.
Test Your Knowledge
- Why should Rosé d’Anjou not be treated as synonymous with dry Rosé de Loire?
- How can yield control change the potential style of a Grolleau red wine?
