10g Shelled Pistachios [small handful]
10g Whole Coffee Beans [small handful
4oz (120ml) white rum
Whip cream dispenser [e.g. iSi Gourmet Whip]
1 N2O charger [do not use soda chargers]
Put all ingredients into the whipper. Close the whipper and charge with the N2O charger and shake for a second or two.
Wait 30 seconds and then shake again.
Wait another 30 seconds, slowly depressurize, then open the whipper. Strain the now-flavored rum into a small carafe/vessel and use in a drink.