To restore Wine that has turned sour or sharp

Fill a bag with leek-seed, or of leaves or twisters of vine, and put either of them to infuse in the cask.

Source: Our Knowledge Box, ed. G. Blackie

To correct a bad Taste and sourness in Wine

Put in a bag the root of wild horse-radish cut in bits. Let it down in the wine, and leave it there two days; take this out, and put another, repeating the same till the wine is perfectly restored. Or fill a bag with wheat; it will have the same effect.

Source: Our Knowledge Box, ed. G. Blackie

To Keep Milk Sweet

Put into a panful a spoonful of grated horse-radish, it will keep it sweet for days.

Source: The White House Cookbook, F.L. Gillette

Definition: Acescent

Acescent: becoming, or tending to be or to become, sour.