
Red wine is a still, unfortified wine made from red- or black-skinned grapes fermented in contact with their skins to extract colour and tannin.
Dry and vinous, carrying dark-fruit aroma over a tannic, gently bitter body with medium acidity and little sweetness.
Poured as a base measure or in smaller quantities as a float or accent, it contributes deep colour, tannic grip and fermented-grape aroma; a float is layered gently over the surface, while a base pour is built or stirred into the drink.
Hard to replace in a base role, where its colour, tannin and dry vinous aroma define the drink; in a float or accent role another red-grape wine such as ruby port can echo the colour and dark-fruit character, though its fortification adds strength and sweetness that a little dilution or a drier build must offset.
Red wine is fermented in contact with red or black grape skins, which gives it colour and tannin; white wine is typically fermented from pressed juice without skin contact. The distinction is the skin maceration and resulting tannin, not merely the grape's colour.
Fortified wine (e.g. port)
Red wine is unfortified table wine at roughly 12–15% ABV; fortified wines have neutral grape spirit added, pushing strength to around 18–20% and often leaving residual sugar. Even red-grape ports therefore behave very differently, adding both strength and sweetness.
It is produced by fermenting crushed red or black grapes on their skins, a maceration that draws anthocyanin pigments and tannins out of the skins into the wine; wines from red grapes fermented without skin contact are not red. The result is a dry, moderate-strength table wine, not fortified with added spirit.
Once opened it oxidises, dulling fruit aroma and shifting flavour over days; keep it stoppered and cool and use within a few days.
Wine is legally defined in both EU and US law as the product of the alcoholic fermentation of fresh grapes or grape must, with red table wine falling under the moderate-alcohol, unfortified class.