The drink was created around the 1900s by the American mine engineer Jennings Cox, who worked for a mining company.
He made a daiquiri using equal amounts of rum, juice, and sugar. Initially, it was shaken and served over crushed ice.
Daiquiri was the name of the nearby beach, and most likely, the cocktail was named after it.
Here is a copy of the original recipe as written by Mr. Cox.

Daiquiri (1900-1910)

Prep Time 1 minute
Total Time 1 minute
Ingredients
- 1½ oz white rum
- ¾ oz simple syrup
- ¾ oz fresh lime juice
Instructions
Shake all ingredients with ice and strain into a small cocktail glass.
Notes
Source: https://en.wikipedia.org/wiki/Daiquiri
Image by Anne & Saturnino Miranda from Pixabay
Nutrition Information:
Yield:
1Serving Size:
1Amount Per Serving: Calories: 140Total Fat: 0gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 1mgCarbohydrates: 12gFiber: 0gSugar: 10gProtein: 0g
This data was provided and calculated by Nutritionix.