2 ounces gin
1 ounce Aperol
1 dash Scotch whisky
Garnish: Orange Twist
Stir with ice. Strain into a cocktail glass.
Source: Robert Hess (2008)

Aperol was first introduced in 1919 at the first "Padova Fiere", a trade exhibition held in Padova Italy. Here in the US we know it better as "Padua", which was the setting for Shakespeare's "Taming of the Shrew". So I named this drink after the lead character "Petruchio".