Name: Corns
Ingredients: 2 ounces gum ammoniac; 2 ounces yellow wax; 6 teaspoons verdigris; soft leather or linen

Corns

Ingredients

2 ounces gum ammoniac
2 ounces yellow wax
6 teaspoons verdigris
soft leather or linen

Directions

Melt the gum ammoniac, yellow wax, and verdigris together.
Spread the mixture on a piece of soft leather or linen.
Before applying the plaster, cut away as much of the corn as possible with a knife.
Renew the plaster in two weeks if the corn has not disappeared.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.