This section is from the book "The Cook's Own Book, And Housekeeper's Register", by N. K. M Lee. See also: Larousse Gastronomique.
Boil quickly in a pint of water, a large handful of sage leaves; cover the pan closely, and when reduced to one-half, strain it; when cold, mix it with the same quantity of Port wine and of vinegar; sweeten it with honey, or with brown sugar. The decoction of sage may be used alone as a gargle, or with vinegar and honey, without the Port wine; or gargle with vinegar and water.
 
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