The body scale
Watery or delicate; low viscosity; refreshing
Examples: Riesling Kabinett (Mosel), Vinho Verde, Muscadet, Beaujolais, Pinot Noir (Burgundy village-level)
Rounded; some weight; neither lean nor heavy
Examples: Sauvignon Blanc (Loire/Marlborough), Chianti Classico, Grenache (southern Rhône), Merlot (St-Émilion)
Thick, viscous texture; fills the mouth; weighty finish
Examples: Barossa Shiraz, Napa Cabernet Sauvignon, Châteauneuf-du-Pape, Amarone, Viognier (Condrieu)
Alcohol as the main driver
Ethanol (alcohol) is more viscous than water — it creates the impression of weight and warmth as it coats the palate and throat. This is why ABV is the most reliable body predictor on a wine label. A Mosel Riesling Kabinett at 8.5% feels delicate and almost weightless; a Barossa Shiraz at 15% feels thick and warming. The difference is almost entirely down to alcohol, with the supporting influence of extract and glycerol.
Climate drives alcohol: warm climates produce riper grapes with more sugar, which converts to more alcohol during fermentation. Cool climates preserve lower sugar levels and therefore lower alcohol. Winemakers can also adjust alcohol up (by concentrating the must) or down (by partial dealcoholisation, increasingly common), but the grape's natural sugar content remains the foundation.
Sources: WSET (tasting curricula); OIV (oenological definitions); AWRI (wine sensory research). Last updated: 2026-10-14. Corrections via the contact form.