Acidic describes a food or liquid that contains acids and has a sour or tart taste. Acidity is important in cooking because it brightens flavour, balances richness, influences colour and texture, and can affect preservation and food safety. The main acids in foods include citric, malic, tartaric, acetic and lactic acid.
Acid can cut through rich or fatty foods, brighten sauces and dressings, balance sweetness and help preserve some preparations. It can also change the texture of proteins, as in ceviche, and influence the colour of vegetables and fruit.
Acidity describes the presence and concentration of acids. Sourness is the taste sensation perceived by the person eating the food. pH measures hydrogen-ion activity, while titratable acidity measures the amount of acid that can be neutralized. These measurements do not always correspond directly to perceived sourness.
Chef’s tip: Add acid gradually and taste the complete dish. If a preparation is too acidic, dilution, fat or a small amount of sweetness may help, depending on the recipe. Adding water is not inherently wrong if dilution is appropriate.
Key distinction: Acidic describes the chemical and sensory properties of a food; it is not simply another word for sour or a direct statement of pH.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.
