Thomas Dawson’s pie recipe (The Good Housewife’s Jewell, 1596) was meant to impart courage to a man or a woman, the sweet potato being considered an aphrodisiac at the time:
A Tarte to prouoke courage either in man or Woman.
TAKE a quart of good wine, and boyle therein two Burre rootes scraped cleane, two good Quinces, and a Potaton roote well pared and an ounce of Dates, and when all these are boyled verie tender, let them be drawne throgh a strainer wine and al, and then put in the yolks of eight Egs, and the braines of three or foure cocke Sparrowes, and straine them into the other, and a litle Rosewater, and seeth them all with Sugar, Sinamon and Ginger, and cloues and Mace, and put in a litle sweet Butter, and set it vpon a chafingdish of coales betweene two platters, and so let it boyle till it be something big.