Prepare the Glass:

Fill a tall glass with ice cubes.

Mix the Base:

In a cocktail shaker, combine the orange juice and Limoncello. Shake well to mix.

Pour the Cocktail:

Pour the orange juice and Limoncello mixture into the prepared glass over the ice.

Add the Grenadine:

Slowly drizzle the grenadine into the glass. It will sink to the bottom, creating a layered "sunrise" effect.

Garnish and Serve:

Garnish with an orange slice and a maraschino cherry.

Optionally, serve with a cocktail stirrer or straw.

Enjoy:

Enjoy your refreshing Limoncello Sunrise Cocktail.