Blue Lagoon (BdW Recipe)

Name: Blue Lagoon (BdW Recipe)
Ingredients: 5⁄6 oz Tanqueray London Dry Gin; 5⁄6 oz Tito's Vodka; 5⁄6 oz Bols Blue Curaçao; 5⁄6 oz Sugar syrup 'rich'; 5⁄6 oz Lemon juice