Start by rimming your glasses with black salt.

In a blender, combine ice cubes, lime juice, orange juice, tequila, triple sec, and sugar if using. Blend until smooth.

Give your mixture a taste and adjust the sweetness with more sugar if desired.

Pour the blended mixture into a shaker with a few ice cubes. Shake well.

Using a cocktail strainer, pour the margarita into the prepared glasses.

Garnish with an orange slice on the rim and drop in a black olive for a spooky twist.

Serve your Halloween Margaritas immediately.