
White wine vinegar is a vinegar from fermented white wine — a dilute solution of acetic acid.
Its job is to sour a drink without tinting it, which red wine vinegar would do to a pale shrub or sour. Measure it exactly: a little too much and vinegar tastes like a fault, not an ingredient.
Champagne vinegar
The closest swap, poured in the exact same amount.
Cider vinegar
Use the same measure. It adds a faint, pleasant apple note to the glass.
Rice vinegar
It is a bit milder, so use slightly more. Avoid seasoned sushi vinegar entirely, as it contains unwanted sugar and salt.
It brings noticeable sweetness. Add a few drops of lemon juice to balance it out, though expect a slightly sweeter result anyway.
Distilled white vinegar
Use just over half the measure of 9% vinegar, or the same amount of 5%. The wine character completely disappears.
Sealed at room temperature it keeps almost indefinitely. A cloudy strand may form in the bottle. That is the mother, it is harmless, and you can strain it out if the look bothers you.