Sore Throat, Alum and Vinegar for

"One glass of warm water; one tablespoonful of vinegar; one teaspoonful of sugar; one-half teaspoonful of alum; dissolve well and gargle throat several times daily."

Source: Mother's Remedies: Over One Thousand Tried and Tested Remidies from Mothers of the United States and Canada, T. J. Ritter