 Torrontés Riojano is the most aromatic of the three, with aromas reminiscent of Muscat and Gewürtztraminer wines.The least aromatic, and least widely planted, is Torrontés Mendocino with the aromatics and plantings of Torrontés Sanjuanino falling in between.All three Argentine Torrontés varieties belong to the "Criollas" group of grape varieties, which is a term used for presumably American-born cultivars of the European grapevine "Vitis vinifera".