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Last Updated: Mar 6, 2026
GSM
GSM
GSM is the acronym for Grenache, Syrah, and Mourvèdre – a popular red blend from southern Rhône. Grenache brings juicy red fruit and warmth, Syrah contributes spice and structure and Mourvèdre adds earthy depth. Together they produce a wine that is both bold and balanced found under labels such as Côtes du Rhône and Châteauneuf-du-Pape. The blend has since found a new home in Australia, Spain and California.
See Also
Magnum
A magnum is a large wine bottle that holds 1.5 liters, double the volume of a standard 750ml bottle.
Climate
Climate refers to the long term weather patterns, including temperature, sunlight, wind and rainfall of a particular region which directly influence grape growth and decides the wine's style.
Clone
A clone is an exact genetic copy of a vine, propagated asexually through cutting and grafting.
Balance
Balance is the proportional relationship between acidity, alcohol, sugar, tannin and fruit concentration in a wine, where no single element dominates.
Blend
A blend is the combination of two or more different grape varieties, vineyard parcels, fermented wines or vintages to create a more balanced, complex and consistent wine.
Malic Acid
Malic acid is a naturally occuring organic acid in wine grapes, primarily found in unripe or cool climate berries. It gives a sharp acidity, tartness and freshness to wine.
Aging
Aging is a post fermentation process where wine rests in barrels (mainly oak) or bottles to undergo chemical changes that improves stability, develops complex flavors and clarifies the liquid.
Flavonoids
Flavonoids are natural polyphenolic compounds gotten from grape skins, stems and seeds. They are found in high concentrations in red wine.
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