From The Long Lost Friend:
Take six hen's eggs and boil them in hot ashes until they are right hard; then take the yellow of the eggs and fry them in a gill of lard until they are quite black; then put a handful of rue with it, and afterward filter it through a cloth. When this is done add a gill of sweet oil to it. It will take most effect where the plaster for a female is prepared by a male, and the plaster for a male prepared by a female.
The grimoire The Long Lost Friend lists this spell.
Timeline of related events
1820Publication of Hohmann's Long Lost Friend (lists this spell)