Sores can be cured by those who possess magical powers going through certain incantations, which are to be followed by applications of oatmeal and vinegar.
Newfoundland.

Sores can be cured by those who possess magical powers going through certain incantations, which are to be followed by applications of oatmeal and vinegar.
Source: Current Superstitions (1896), entry 828.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.