Daiquiri No. 3

• 2 ounces (60 milliliters) white rum
• 1/2 ounce (15 milliliters) double simple syrup (see note)
• 1/2 ounce (15 milliliters) fresh lime juice
• 1/4 ounce (7.5 milliliters) grapefruit juice
• 1 teaspoon (5 milliliters) maraschino liqueur, preferably Luxardo
• 1 lime wedge, for garnish

1. Note: To make double simple syrup, combine two parts sugar to one part water in a saucepan over medium-low heat, stirring to dissolve the sugar. Promptly remove the pan from the heat once the sugar is dissolved. (You don't want it to boil.) To store, sterilize a bottle or jar by filling it with boiling water and pouring some over the lid, too. Dump the water out right before you fill with the hot syrup and seal the jar. Let cool before use.
2. Combine the rum, simple syrup, lime juice, grapefruit juice, and maraschino liqueur in a cocktail shaker or mixing glass. Shake with ice cubes and strain over an old fashioned glass filled with crushed ice. Garnish with the lime wedge and serve with a straw.

milliliters, milliliters, milliliters, milliliters, lime

Taken from food52.com/recipes/29612-daiquiri-no-3 (may not work)