How to Make a Mojito with White Rum

A well-made mojito is one of the clearest demonstrations of what white rum actually does in a glass — its clean, faintly sweet character acts as a canvas rather than a competitor to fresh lime and mint. This page covers the classic mojito recipe, the mechanics of how the drink comes together, the most common variations, and the decisions that separate a good mojito from a great one.

Definition and scope

The mojito is a Cuban highball built from five components: white rum, fresh lime juice, sugar (or simple syrup), fresh mint, and soda water. The drink traces its documented commercial history to Havana, where it appeared on bar menus at La Bodeguita del Medio in the mid-20th century. The formula is deceptively simple — five ingredients, no heat, no infusion time — yet the mojito is one of the more technique-sensitive cocktails in the standard repertoire.

What makes the drink distinctly Cuban, and distinctly about white rum, is the spirit's neutrality. White rum filtered to a clear, light-bodied profile (white rum filtration and aging affects this more than most drinkers realize) carries alcohol content typically between 35% and 40% ABV (white rum alcohol content and proof), which is just assertive enough to anchor the drink without overwhelming the botanical brightness of fresh mint. Dark rum, gold rum, or spiced rum would each push the flavor in a different direction — the mojito is one of the few cocktails where white rum vs dark rum is not a matter of preference so much as category.

How it works

The mojito works through a layered build, not a shaken blend. The sequence matters.

  1. Muddle the mint — Place 8 to 10 fresh mint leaves in the bottom of a highball glass. Add 2 teaspoons of white granulated sugar or 15 ml (½ oz) of simple syrup. Press the mint firmly with a muddler, 4 to 5 short strokes. The goal is bruising, not shredding — torn mint releases chlorophyll that tastes bitter and turns the drink slightly green.
  2. Add lime juice — Squeeze 30 ml (1 oz) of fresh lime juice directly into the glass. Bottled lime juice is not an acceptable substitute; the volatile aromatic compounds in fresh lime that make the drink smell right begin oxidizing within 20 minutes of cutting.
  3. Add rum — Pour 60 ml (2 oz) of white rum over the mint and lime mixture. A light, column-distilled Cuban-style rum is the reference choice, but American craft producers (American craft white rum producers) increasingly offer bottles that perform well here.
  4. Add ice — Fill the glass with crushed ice. Crushed ice dilutes more quickly than cubed, which is intentional: the mojito is meant to be drunk cold and relatively fast, and the dilution softens the rum's edge progressively as the drink sits.
  5. Top with soda water — Add 60 to 90 ml (2 to 3 oz) of chilled soda water and stir gently with a bar spoon, lifting from the bottom once or twice.
  6. Garnish — A fresh mint sprig, slapped once against the palm before placing, releases aroma right at the drinker's nose. A lime wheel on the rim is optional and mostly visual.

The physics here are worth understanding: the carbonation in the soda water carries mint aromatics upward with each bubble. This is why the mint sprig garnish is placed at the surface rather than buried in the ice.

Common scenarios

The batch mojito — For gatherings of 8 or more, individual muddling becomes impractical. The practical solution is to muddle mint with sugar and lime juice in a large pitcher, strain out the solids, then add rum and refrigerate the base. Soda water is added per glass at service, not to the pitcher. This preserves carbonation. White rum cocktail recipes for entertaining covers the scaling math in more detail.

The frozen mojito — Blending all five components with ice produces a slushy variant that sacrifices carbonation entirely for texture. Rum selection matters more here: a rum with more body holds up better when diluted by blended ice.

The virgin mojito — Replace rum with 30 ml of white grape juice or a neutral sparkling water. The aromatics work identically; what's lost is the slight warmth and the flavor compound ethyl acetate that rum contributes to the nose.

Decision boundaries

The single highest-leverage decision in a mojito is rum selection. The drink amplifies rather than masks the base spirit's character. A rum with noticeable sulfur or harsh finish (common in lower-cost column distillates) becomes more obvious in a mojito, not less, because the mint and lime strip away the softening effect that mixers provide in other drinks. Reviewing white rum tasting notes and flavor profiles before selecting a bottle is not overthinking it — it is the relevant information.

The second decision is sugar format. Granulated sugar muddled with mint creates a slightly coarser texture and requires more muddling pressure; simple syrup (1:1 sugar to water) integrates faster and more evenly. Neither is wrong. Demerara syrup introduces a molasses note that shifts the drink toward a darker-rum profile even when white rum is used — a useful flavor lever, not a rule violation.

The third decision is lime quantity. The standard 1 oz is a starting point. Limes vary significantly in juice yield and acidity by season and origin; a very tart lime at ¾ oz produces the same balance as a mild lime at 1¼ oz. Tasting the muddled base before adding rum takes 3 seconds and catches most balance problems before they're sealed in with ice.

For a broader orientation on the spirit itself, the White Rum Authority index is the reference starting point for everything from production to cocktail application.

References

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