Standard Captain's Blood!

• 2 oz Jamaican rum
• 1 oz lime juice
• 0.75 oz falernum syrup
• 2-3 generous dashes of Angostura bitters

Shake hard for 30 seconds to chill, dilute, and generate ice chips; gate pour (don't strain) into a chilled coupe rimmed with lime juice; garnish with three dots of Angostura bitters (an eyedropper helps) and a wedge, wheel, or twist of lime.

Household favourite, this one.