Ring Worm
This eruption, which generally appears on the head, in a circular form, attended with painful itching, is sometimes removed by rubbing it with black ink, or mushroom ketchup. The following preparation is also recommended. Wash some roots of sorrel quite clean, bruise them in a mortar, and steep them in white wine vinegar for two or three days. Then rub the liquor on the ring worm three or four times a day, till it begin to disappear.
Source: The Cook And Housekeeper’s Complete and Universal Dictionary, Mary Eaton
Cough Mixture
1 oz syrup of squills, 1d paragoric, 1d laudanum, 1d oil of peppermint, 1d white wine vinegar; dissolve 1lb treacle in one gill hot water, when cold mix all together. Dose: for children 1 teaspoonful three times a day; for adults, one tablespoonful three times a day.
Source: Recipes, Bradford Lifeboat Bazaar
Raspberry Vinegar, and its uses
Put two pounds of raspberries in a large bowl, and pour on them two quarts of white-wine vinegar; the next day, strain the liquor on two pounds of fresh raspberries; let this stand a day, and strain it into a stone jar; to each pint of the liquor put a pound of loaf sugar; stir till it is dissolved, and put the jar in a sauce-pan of water, which keep boiling for an hour; skim it, and bottle it when cold. This is used not only as a refreshing drink, mixed with water, but is said to be of use in complaints of the chest. No glazed or metal vessels should be used in making it.
Source: Domestic Cookery, Useful Receipts, and Hints to Young Housekeepers, Elizabeth E. Lea