How to Make a Dirty Martini
A dirty martini is simply a martini with a splash of olive brine stirred in. Combine roughly 2½ oz (75 ml) gin or vodka, ½ oz (15 ml) dry vermouth and ½ oz (15 ml) olive brine over plenty of ice, stir for around 30 seconds until properly cold, strain into a chilled coupe or martini glass, and garnish with two or three good green olives. That is the whole trick. Everything else, the brine ratio, the choice of spirit, and above all the olives, is where a passable drink becomes a memorable one.
The word “dirty” refers only to that cloudy splash of brine, sometimes called olive juice, which turns a crystal-clear martini faintly hazy and gives it a savoury, saline backbone. Get the brine right and you have one of the great cocktails; overdo it and you have a glass of cold pickle water. Below is how we make ours, and how to tune it to your own palate.
Brine ratios: from a whisper to properly filthy
“Dirty” is a spectrum, not a fixed measure. How much brine you add decides everything. Start on the lighter side, because you can always add more brine but you cannot take it back out. A good rule of thumb is to match your vermouth to your brine, then adjust to taste.
| Style | Spirit | Dry vermouth | Olive brine | Character |
|---|---|---|---|---|
| Slightly dirty | 2½ oz (75 ml) | ½ oz (15 ml) | ¼ oz (7 ml) | A saline hint, spirit still leads |
| Classic dirty | 2½ oz (75 ml) | ½ oz (15 ml) | ½ oz (15 ml) | Balanced, savoury, the standard |
| Extra dirty | 2½ oz (75 ml) | ¼ oz (7 ml) | ¾–1 oz (22–30 ml) | Bold, briny, unmistakably filthy |
Two things about the brine itself. First, use the liquid from a jar of good olives, not a bottled “olive juice” laden with additives if you can help it, though dedicated cocktail brines do exist and many are excellent. Second, the brine carries the flavour of whatever olives it came from, so a jar of buttery green olives and a jar of sharp, herby ones will pull the drink in very different directions. That is why the olives matter as much as the ratio.
The best olives for a dirty martini
The classic choice is a firm, briny green olive. You want something meaty enough to eat off the pick at the end, with clean salinity rather than a heavy, oily or overly bitter note. Spanish Manzanilla and Gordal (often sold as “queen” olives) are the traditional workhorses, prized for their crisp bite and mild, slightly nutty flavour. Note that these are variety names describing the fruit itself; you’ll find them grown and cured in Spain, but also in California and elsewhere, so read the jar rather than assuming a single country of origin.
Stuffing changes the drink too. Pimento is the traditional filling and adds a faint sweetness; a blue-cheese-stuffed olive makes the martini richer and rounder, verging on a savoury snack in a glass. Purists keep it plain so the brine tastes clean. For a fuller comparison of varieties and stuffings, see our guide to the best olives for a martini, and our wider olive varieties encyclopedia if you want to go down the rabbit hole.
A few pointers that make a real difference:
- Firm over soft. A mushy olive falls apart on the pick and clouds the drink unpleasantly. You want one that holds its shape.
- Pitted, for the brine. Pitted olives sit in more liquid, so you get more usable brine per jar. Unpitted keep slightly better texture, so keep a jar of each if you’re fussy.
- Skip the heavily flavoured jars. Garlic-, chilli- or citrus-spiked olives can hijack the drink. Lovely to eat, but their brine tends to overwhelm.
- Chill your olives and your glass. A warm olive dropped into a cold martini nudges the whole drink warmer. Keep the jar in the fridge.
The method, step by step
| Step | What to do | Why it matters |
|---|---|---|
| 1 | Chill the glass with ice water or in the freezer | Keeps the drink cold from first sip to last |
| 2 | Fill a mixing glass with ice; add spirit, vermouth and brine | Plenty of ice means faster chilling, less dilution |
| 3 | Stir for roughly 30 seconds, until the glass frosts | Stir, don’t shake — shaking clouds and over-aerates it |
| 4 | Discard the ice water, strain into the chilled glass | A fine strain leaves it clean and silky |
| 5 | Garnish with 2–3 olives on a pick | Odd numbers are the bartender’s convention |
Stir, don’t shake. Despite a certain fictional spy, a martini is traditionally stirred: shaking whips in tiny air bubbles and ice shards that leave it cloudy and thin. A dirty martini is already a little hazy from the brine, so you want the rest of it silky and clear. If you prefer vodka to gin, go ahead; gin brings botanical, juniper-led aromatics, while vodka gives a cleaner, more neutral canvas that lets the olive brine sing.
Dirty martini common questions
What is the ratio for a dirty martini?
A reliable starting point is 2½ oz spirit, ½ oz dry vermouth and ½ oz olive brine, stirred and strained. Reduce the brine to ¼ oz for “slightly dirty” or push it to ¾–1 oz for “extra dirty”. Add brine gradually and taste as you go.
Can I use the brine straight from an olive jar?
Yes, and most people do. The liquid in a jar of good green olives is exactly what you want. Just choose olives without heavy added flavourings like garlic or chilli, as that brine can overpower the drink.
Gin or vodka for a dirty martini?
Either works. Gin adds botanical, juniper character that plays nicely against the salt; vodka keeps things clean and neutral so the brine and olives lead. It comes down to personal taste.
Why is my dirty martini cloudy?
A little haze is normal and comes from the brine. Heavy cloudiness usually means it was shaken rather than stirred, which introduces air and ice fragments. Stir instead, and fine-strain for a cleaner finish.
A note on enjoyment: a dirty martini is a spirit-forward drink, so treat it with respect. Please drink responsibly.