Shots and Stripes Forever

Combine the gin, lemon juice, blue curaçao, vanilla syrup, and orange bitters in a cocktail shaker.

Shake vigorously to blend the ingredients well.

Strain the mixture into a highball glass filled with crushed ice, forming a vibrant blue layer.

Add more crushed ice to create a white layer atop the blue layer.

Finish by drizzling Peychaud's bitters over the ice for a striking red layer.

Alternatively, you may skip the layered effect and Peychaud's bitters, enjoying the drink as a sophisticated sour.