Phoebe's burden

Chill a martini glass by filling it with ice water and setting it aside.

In a cocktail shaker, combine the spiced rum, elderflower liqueur, Averna, pastis, and freshly squeezed lime juice.

Fill the shaker with ice and securely close it.

Vigorously shake until the mixture is well-chilled.

Discard the ice water from the chilled martini glass.

Strain the cocktail into the martini glass.

Serve immediately and enjoy.