2 oz. Light Rum (more Light Rum drinks)
3/4 oz. Calvados (more Calvados drinks)
1/2 oz. Lemon Juice (more Lemon Juice drinks)
1 tsp. Sugar Syrup (Or to taste) (more Sugar Syrup drinks)
Shake with cracked ice and strain into a chilled cocktail glass. Garnish with an apple slice.