Vinegar and sharp dressings — flavouring profile

The problem nobody names: it is not that vinegar clashes with wine, it is that a sharp dressing resets the palate so that any wine less acidic than the plate tastes flat, sweet and hollow.

The compounds that matter. Acetic acid is the sharpness of vinegar, and it works by moving the goalposts. The palate calibrates to the most acidic thing in the mouth, so once a dressing has landed, a wine of ordinary acidity reads as flabby and faintly sugary. It is a structural effect rather than a flavour one, which is why it survives every attempt to solve it with aroma. Behind it sit the oils of the dressing, which coat the palate, and in a sharp citrus dressing citric acid, which does the same thing more brightly. Where the vinegar has been aged, as with balsamic, sugar arrives too, and the wine has to answer that as well.

What it demands of a wine. Acidity at least equal to the dressing, and preferably above it. Very little else matters until that test is passed. Beyond it, the wine wants a clean fruit register that will not read as sweet, low or no oak, and low tannin, since the dressing sharpens the perception of astringency. Alcohol should stay modest: a hot wine against a sharp dressing turns coarse.

Seek

The highest-acid whites the field holds. Assyrtiko from Santorini and Picpoul from the Languedoc are the two hardest to out-sharpen. Muscadet, Verdicchio and Albarino all clear an ordinary vinaigrette comfortably. Traditional-method sparkling is a reliable answer for anything both sharp and fried, because the bead handles the oil while the acid handles the vinegar. Dry rosé from Provence works where the dressing sits on a salad with some substance to it. For balsamic, which brings sweetness alongside the acid, allow a fuller and riper white or a light, cool red with no tannin to speak of.

Avoid

Soft, low-acid whites of any origin, which the dressing flattens completely. Oaked whites, whose vanilla reads as sugar. Tannic reds, which turn hard and drying. Fine or aged bottles, which will simply not be tasted.

Three to reach for. An Assyrtiko from Santorini when the dressing is genuinely sharp. A Picpoul from the Languedoc as the everyday answer, cheap and unfailingly acidic. A Provence rosé where the salad has body and the dressing is gentler.