Prepare the chocolate rim: moisten the edge of a chilled cocktail glass with a small amount of sugar syrup, then dip into chocolate powder or finely grated chocolate. Set aside to set.
Add 45ml Baileys Irish Cream, 45ml white crème de menthe, and 45ml fresh cream into a cocktail shaker.
Fill the shaker with ice and shake vigorously for 10–12 seconds until well chilled and combined.
Double-strain into the prepared chocolate-rimmed cocktail glass.
Serve immediately.
Use white crème de menthe rather than green to keep the drink visually clean and pale - green would muddy the colour against the cream and Baileys. Chilling the glass beforehand helps the chocolate rim set firmly and keeps the drink colder for longer.
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