Prepare the Glass: Start by rimming a martini glass with black sugar. To do this, run a lime wedge around the rim and dip it in black sugar until evenly coated. Set aside.
Mix the Ingredients: In a cocktail shaker, add the vodka, black raspberry liqueur, triple sec, and lime juice. Fill with ice to chill the mixture.
Shake It Up: Cover the shaker and give it a good shake for about 15-20 seconds. You want the mixture to be ice-cold and well-mixed.
Strain and Serve: Carefully strain the cocktail into your prepared martini glass, being cautious not to disturb the black sugar rim.
Garnish: For that final Halloween touch, add a slice of blood orange, or a couple of dark berries to the edge of the glass.
Tip: If you prefer a slightly sweeter cocktail, add a dash of simple syrup to the mix before shaking.