Prepare the glass: Start by rimming your cocktail glass with black sugar. To do this, run a lime wedge around the rim and dip it into a small plate filled with black sugar. This creates that dark, magical look right from the start.
Mix the potion: In a cocktail shaker filled with ice, combine 1 ½ oz vodka, 1 oz blue curaçao, 1 oz cranberry juice, and ½ oz lime juice. Shake vigorously to ensure everything is well-mixed and chilled.
Strain and pour: Strain the mixture into your prepared glass. The combination of blue curaçao and cranberry juice will create a lovely gradient that resembles a mystical potion.
Add the drama: Gently pour a splash of grenadine down the inside edge of the glass. This will slowly settle at the bottom, giving a creepy, blood-red effect without mixing.
Finish with flair: If you’re feeling adventurous and want to wow your guests, carefully add a small piece of dry ice into the glass for a smoky, foggy effect. Remember to let it dissolve entirely before drinking. Otherwise, garnish with blackberries or raspberries.