Fill your cocktail shaker with regular ice.
Add vodka, tomato juice, lime juice, lemon juice, horseradish, Worcestershire sauce, hot sauce, simple syrup, triple sec, grenadine, salt, pepper, and jalapeño slices (if using).
Shake well for about 15 seconds.
Strain into a tall glass filled with fresh ice.
Garnish with your favorite spooky toppers—celery, olives, lime, lemon, cherry tomato, or a pickle spear.
Using tongs or gloves, carefully drop in a small piece of food-safe dry ice.
Let the fog roll! Wait until the dry ice completely dissolves before sipping