Fill a sling glass to the top with crushed ice
Pour in 0.5 oz of lime juice, 0.5 oz of ginger syrup, 0.5 oz of falernum liqueur, 1 oz of Amontillado sherry and 1 oz of gold tequila
Add 1 dash of Angostura bitters
Stir with a swizzle stick
Top up with crushed ice
Garnish with a mint sprig