Portuguese and Spanish, as well as (acido) Italian term for sour; see there.
One of the five taste sensations (in addition to sweet, bitter, salty and umami) that can be perceived over the entire tongue, whereby the lateral edges of the tongue react particularly sensitively to acidity (see taste). However, the sensation of acidity is relatively dependent on the temperature of the wine. When the wine is warm, the impression of sharpness is intensified by the interaction of alcohol and acidity. A dry white wine with a total acidity of 7 g/l appears very acid fresh and tangy at a high temperature of 18 °Celsius, but at an optimum drinking temperature of around 10 to a maximum of 12 °Celsius.

Tongue - flavours1 = sweet, 2 = acid, 3 = salty, 4 = bitter, 5 = umami
The different acids in wine (there are 20 in total, often only in very small quantities) produce different sensations. Lactic acid has only a slightly acidic flavour, acetic acid has a sharp flavour and malic acid...
![]()
If I were to rate websites, you would deserve the highest rating. It is rare to come across websites that provide such a large amount of data and are still so intuitive to use. Respect for the lovingly researched and informatively prepared encyclopedia. Keep it up!
Lothar Lindner
Innsbruck