Quick answer
You are one step from a classic daiquiri: white rum, fresh lime, and simple syrup in a 2:1:0.75 ratio (adjust to taste), shaken hard. Add mint and soda for a mojito path; blend with ice for a patio frozen daiquiri.
Shake until the tin frosts — rum sours punish under-dilution; you want the drink cold, silky, and just sweet enough that lime still leads.
Five delicious forks
Classic daiquiri: strained, up, lime wheel.
Hemingway: grapefruit and maraschino angle (if you expand pantry).
Mojito: muddle mint, rum, lime, sugar, top soda — bruise mint gently; tearing it makes chlorophyll bitterness.
Ti punch style: cane syrup + lime zest oils for agricole rums.
Spiced: tiny pinch of salt and dash of bitters for depth.
Pick your rum style
Clean column-still rum keeps daiquiris crisp; aged rum adds caramel for richer shakes; overproof adds backbone in punches.
Food pairing angle
This family loves island spice, jerk, coconut curry, and grilled pineapple. If dinner is heavy cream or red wine territory, PairlyMix can steer the same three ingredients toward a drier, less tropical build.
Zero-proof parallel
Lime, sugar, and NA spirit or coconut water build a convincing tropical sour without ethanol.
Go beyond three ingredients
Tell PairlyMix what else is in your kitchen — it extends the rum-lime-sugar base intelligently.