By Malvina Demaj Last Updated: Mar 6, 2026

GSM

(jee-ess-em)
DEFINITION

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.

Did you know? The "M" stands for "Monastrell" in Spain and "Mataro" in Australia.

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