Measure out 3 oz of green apple schnapps into your shaker, followed by 1 oz of vodka, 0.5 oz of grenadine, and 0.5 oz of lemon juice.
Add a handful of crushed ice to the shaker, enough to chill the mixture thoroughly.
Seal the shaker tightly and shake vigorously for about 15 seconds until the outside feels icy cold and the mixture is well combined.
Remove the shaker lid and place a fine strainer over your chilled martini or coupe glass.
Pour the mixture slowly through the strainer into the glass, creating a layered or swirling effect for a spooky look.
Garnish with a slice of green apple or a spooky cherry to add extra visual drama.
Set the glass aside for a moment to let the condensation shimmer and the colors settle into that vibrant, glowing hue.