Australian wine important resource in the globalisation of wine and wine critic Matt Kramer notes that "the most powerful influence in wine today" comes from Australia. "GSM" is a name commonly used for a red wine consisting of a blend of Grenache, Shiraz (Syrah), and Mourvèdre. Blends where Shiraz is the main component are sometimes referred to instead as SGM. This blend originated from those used in some Southern Rhône wines, including Châteauneuf-du-Pape, though it is also found in South Australia, California (particularly Paso Robles, originating with Tablas Creek Vineyard), and Washington (Columbia Valley); smaller production exists in Argentina and South Africa.
Rhône wine is classified under the Côte du Rhône and Côte du Rhône-Villages appellations. The prestigious Northern Rhône appellations account for less than 5% of the total Rhône wine production. The northern Rhône is characterised by a continental climate with harsh winters but warm summers. Its climate is influenced by the mistral wind, which brings colder air from the Massif Central. Northern Rhône is therefore cooler than southern Rhône, which means that the mix of planted grape varieties and wine styles are slightly different. Syrah is the only red grape variety permitted in red AOC wines from this sub-region. The grape, which