Pour all ingredients, except the roasted pistachios, in a tin shaker
Add ice and shake vigorously for 10-15 seconds
Strain into a single old fashioned glass over a big ice cube
Peel a large mandarin zest and squeeze the juice out of the peel over the glass. Drop the zest in the drink with a few roasted pistachios on top
If you have hard time finding the Dumante pistachio liqueur or are reluctant to spend the money to get it, then try this homemade pistachio cordial we made a few mouths back. It is a great substitution for the liqueur in this cocktail and a fantastic sweetener to add to any dessert cocktail or a cup of coffee in the morning.