Remy's Bar School: the science of a perfect cocktail

Everything in a cocktail is chemistry you can taste. Learn five ideas and you can fix any drink on earth — including the sad ones at hotel bars.

1. Balance is a ratio, not a feeling

The sour family — daiquiri, margarita, whiskey sour — runs on one template: 2 parts spirit, 1 part citrus, 1 part sweet (60/30/22 in ml, roughly). Stirred and boozy? Think 2:1 spirit to fortified wine. Highballs: 1 part spirit to 3-4 parts filler. Start from the template, THEN season to taste. Freestyling before you know the template is how kitchens burn down.

2. Dilution is an ingredient

Water is 20-30% of your finished drink, and that is not an accident — it is the point. Shaking with ice adds roughly a quarter of the volume as meltwater; stirring about a fifth; building over cubes around an eighth up front, more as you linger. That water opens aromas and tames the burn, exactly like a splash of water in whisky. A drink that tastes harsh is usually not too strong — it is under-diluted, which is the same sentence said colder.

3. Shake juice, stir spirits

The oldest rule behind the bar and still undefeated: anything with citrus, cream, egg or coffee gets shaken — you want the violence, the air, the emulsion, the foam. Anything that is only spirits and fortified wine gets stirred — you want silk and clarity, not bubbles. Ten to fifteen seconds of honest shaking; thirty seconds of patient stirring. Yes, thirty. Count slowly. I will know if you cheat.

4. Ice is not furniture

Big, solid, cold ice melts slowly and dilutes on YOUR schedule. Small wet ice from a warm tray is a flood waiting to happen. One large cube for stirred drinks on the rocks; plenty of hard cubes in the shaker; crushed ice only where the recipe wants fast dilution (bramble, mojito, tiki). And chill the glass — a warm glass undoes thirty seconds of stirring in one pour.

5. Strength you can calculate

Final strength = pure alcohol divided by total volume, meltwater included. A classic sour lands around 15-18% vol, a martini near 28, a spritz around 8-10. One Swiss standard drink is about 10 g of pure alcohol — a daiquiri holds roughly 1.5. The Mix-Labor does all of this per glass while you type, and tells you honestly when your creation is a rocket.

The Rémy shortcut

Taste before you serve, always — one straw, ten seconds. Too sharp? A few ml of syrup. Flat? A squeeze of citrus or a pinch of salt (yes, salt — it mutes bitter and lifts fruit). Too sweet? More citrus or a splash of water. Fixing a drink takes five seconds when you know which lever to pull. Proost.