At any standard cooking pot or station, mix:

-The juice of 3 bunches of Juniper Berries

-One standard pile of salt

-A Spriggan's Taproot

-And the oil of dwarven machinery

This will produce enough Tonic for four doses.


Of course, a woman subjected to the curse will struggle to mix the brew herself due to her reduced intelligence and sensibility. Assume that the amounts required of each ingredient will be higher in this case.