Lemon Olive Oil Dressing: The Ratio, the Oil and Five Variations
A lemon olive oil dressing is the simplest thing you can put on a salad and one of the easiest to get slightly wrong: too sharp, too oily, or split into a greasy puddle at the bottom of the bowl. The fix is not a cleverer recipe. It is understanding three things: the ratio of oil to lemon, why the two separate and how to hold them together, and which olive oil you pour in, because in a dressing the oil is eaten raw and does most of the talking. Below is our own base recipe, written from scratch for this article with metric and US measures side by side, followed by a ratio table you can use without a recipe at all and five variations, from a Greek-style ladolemono to a Moroccan-spiced version with preserved lemon.
For our own oil, see our Cold-Pressed Single-Estate Extra Virgin Olive Oil - Marrakech (500ml).
The Short Answer
- The classic lemon olive oil dressing ratio is 3 parts extra virgin olive oil to 1 part fresh lemon juice. Move to 2:1 if you like it brighter, or 4:1 for soft, delicate leaves.
- Our base recipe is 90ml (6 tbsp) extra virgin olive oil, 30ml (2 tbsp) lemon juice, ½ tsp finely grated lemon zest, ¼ tsp fine salt and, if you want it to hold together, ½ tsp Dijon mustard. It makes about 120ml (½ cup), enough for four to six side salads.
- Dissolve the salt in the lemon juice before the oil goes in: salt does not dissolve in oil, so it stays gritty if you add it last.
- Oil and lemon juice do not mix on their own. Whisking or shaking makes a temporary emulsion; a little mustard or finely grated garlic helps it last longer.
- Use extra virgin olive oil. In a raw dressing the oil is the main flavour, and refined or "light" olive oil has had most of its flavour processed out.
- Sidr & Stone's olive oil is a single-estate, cold-pressed, unfiltered extra virgin oil from our own farm on the plains outside Marrakech, Morocco, sold in 500ml dark glass.
Lemon Olive Oil Dressing Recipe (Metric and US)
This is the base dressing: bright but not sharp, with enough body to cling to leaves. It takes about five minutes and one small bowl or a clean jam jar with a lid.
| Ingredient | Metric | US |
|---|---|---|
| Extra virgin olive oil | 90ml | 6 tbsp |
| Fresh lemon juice (about 1 lemon) | 30ml | 2 tbsp |
| Finely grated lemon zest | ½ tsp | ½ tsp |
| Fine salt | ¼ tsp | ¼ tsp |
| Dijon mustard (optional, helps it emulsify) | ½ tsp | ½ tsp |
| Freshly ground black pepper | A pinch | A pinch |
Method
- Zest, then juice. Grate the zest from the lemon before you cut it, taking only the yellow layer; the white pith underneath is bitter. Then juice it and strain out the pips.
- Season the lemon, not the oil. Put the lemon juice, zest and salt in a bowl or jar and stir for a few seconds until the salt has dissolved. Add the mustard and pepper.
- Add the oil. In a bowl, pour the oil in a thin stream while whisking, so it turns cloudy and slightly thick. In a jar, add all the oil, close the lid tightly and shake hard for 20–30 seconds.
- Taste on a leaf. Dip a salad leaf in rather than tasting from a spoon; a dressing that tastes harsh on its own is often right on a salad. Too sharp: add a tablespoon of oil. Too flat: add a squeeze of lemon or a pinch of salt.
- Dress late. Toss it through the salad just before serving, starting with about half and adding more until the leaves look glossed rather than wet.
Lemons vary a great deal: a medium lemon usually gives somewhere between 2 and 3 tablespoons (30–45ml) of juice, and acidity varies from fruit to fruit. That is why the final step is tasting, not measuring. Bottled lemon juice works in a pinch, but it tastes flatter and more "cooked" than fresh, and it has no zest to give you the lemon's fragrant oils.
The Ratio: How Much Lemon to Olive Oil?
For most salads, use 3 parts extra virgin olive oil to 1 part fresh lemon juice. That 3:1 ratio gives a balanced dressing that tastes of both lemon and oil without making you wince. From there, adjust to what you are dressing.
Once you think in ratios, you no longer need a recipe. One "part" can be a tablespoon, a shot glass or a jar lid; the proportions are what matter. The table below uses tablespoons so you can scale up or down.
| Ratio (oil : lemon) | Example | How it tastes | Best for |
|---|---|---|---|
| 4 : 1 | 8 tbsp (120ml) oil + 2 tbsp (30ml) lemon | Soft and rounded; the oil leads | Butterhead, little gem, avocado, delicate leaves |
| 3 : 1 | 6 tbsp (90ml) oil + 2 tbsp (30ml) lemon | Balanced: the everyday dressing | Mixed leaves, cucumber, tomatoes, most salads |
| 2 : 1 | 6 tbsp (90ml) oil + 3 tbsp (45ml) lemon | Bright and zesty | Rocket, grains, lentils, chickpeas, grilled vegetables |
| 1 : 1 | 4 tbsp (60ml) oil + 4 tbsp (60ml) lemon | Very sharp; too sharp for most leaves | Short vegetable marinades, or spooning over warm potatoes and greens |
Two adjustments change the ratio without you noticing. Mustard, tahini or garlic add body and make a sharper ratio taste softer, so you can go nearer 2:1. Sweeter Meyer lemons are less sour than ordinary lemons, so they take a 2:1 ratio comfortably. If you are dressing something that soaks liquid up, such as warm grains, pulses or potatoes, it will mute the lemon, so err on the brighter side.
Why Oil and Lemon Separate, and How to Keep Them Together
"What happens when you mix olive oil and lemon?" is one of the most common questions about this dressing, and the answer is: chemically, not much. Lemon juice is mostly water with citric acid; olive oil is fat. They do not dissolve into each other, so left alone the oil floats to the top within minutes. Whisking or shaking breaks the oil into tiny droplets suspended in the juice, which is why the dressing turns cloudy, pale and slightly thicker. That suspension is called an emulsion, and in a plain oil-and-lemon dressing it is temporary.
Separation is not a fault. A dressing that has split tastes exactly the same once you shake it again, and many Greek and Middle Eastern cooks never try to stabilise it at all. If you want it to hold for longer, a few small things help:
- A little mustard. Even ½ tsp of Dijon helps the droplets stay suspended, because compounds in the mustard thicken the lemon juice and coat the oil droplets.
- Grated garlic, tahini or very finely chopped herbs. These add fine solids that slow the oil droplets from merging.
- Add the oil slowly. A thin stream while whisking makes smaller droplets than tipping it all in at once.
- Use a jar. Shaking hard in a sealed jar is the quickest way to a creamy emulsion, and it doubles as storage.
Neither the lemon nor the shaking "cooks" or damages the oil. What does change its character over time is air, light and warmth, which is why a dressing made with good oil tastes best on the day you make it.
Which Olive Oil Should You Use for Lemon Dressing?
Use extra virgin olive oil. A dressing is the one place where olive oil is eaten raw, at room temperature, as roughly three quarters of the mixture, so its flavour is the dressing's flavour. Extra virgin oil is mechanically pressed from fresh olives and never refined, so it keeps the fruity, grassy, bitter and peppery notes of the olives. Refined olive oil and "light" olive oil are processed to be neutral; they will give you a lemon-flavoured fat rather than a lemon and olive oil dressing.
Within extra virgin, match the intensity of the oil to the job:
- Medium, fruity oils are the all-rounders for lemon dressing: green and lively enough to stand up to the lemon, without fighting it.
- Robust, very peppery oils are excellent with bitter leaves, rocket, beans and grilled vegetables, but with plenty of raw garlic and a 2:1 ratio they can taste harsh. Soften them with a little more oil or a touch of mustard.
- Delicate, buttery oils suit soft lettuce and avocado but can disappear under a lot of lemon; use them at 4:1.
Freshness matters more than almost anything else here, because raw use exposes a tired oil immediately. An oil that has gone off smells of crayons, putty or stale nuts, and lemon juice will not hide it. If you are choosing a bottle, our guide to choosing a quality olive oil covers what to look for: the extra virgin grade, a harvest or best-before date, dark glass or a tin, and a named origin. For matching oil style to particular leaves, see our article on olive oil for salad.
Lemon dressing or lemon olive oil?
Searches for "lemon olive oil" can mean two different things. This article is about a dressing you make from olive oil and lemon juice. Lemon olive oil, by contrast, is a bottled oil flavoured with lemon, either by crushing whole lemons with the olives or by infusing the oil afterwards. It has lemon aroma but none of the juice's acidity, so on its own it is not a dressing. Our article on lemon olive oil explains the difference between co-pressed, infused and flavoured versions.
Five Lemon Olive Oil Dressing Variations
Each of these starts from the base recipe above (90ml / 6 tbsp oil and 30ml / 2 tbsp lemon juice). They are our own starting points, so taste and adjust.
1. Greek-style ladolemono
Ladolemono simply means "oil-lemon" in Greek, and it is the plain sauce spooned over grilled fish, vegetables and potatoes across Greece. Leave out the mustard and zest, keep the 3:1 ratio, and add ½ tsp dried oregano, rubbed between your fingers. Whisk just before serving; it is meant to be loose.
2. Garlic lemon olive oil dressing
Finely grate 1 small garlic clove into the lemon juice with the salt and leave it for 10 minutes before adding the oil; the acid softens the raw garlic's bite. Use the mustard: garlic and mustard together make this the most stable version. It also works as a vegetable marinade (see below).
3. Lemon herb dressing
Stir in 2 tbsp very finely chopped soft herbs, such as flat-leaf parsley, mint, dill or chives, in any mix. Add the herbs at the end and use the dressing the same day, as chopped herbs darken and lose their freshness quickly once dressed.
4. Lemon tahini dressing
Whisk 1 tbsp tahini into the lemon juice first; it will seize and thicken, which is normal. Loosen it with 1–2 tbsp cold water, then whisk in the oil, dropping it to 60ml (4 tbsp). The result is creamy and completely dairy-free, and good with roasted vegetables, grain bowls and crunchy cabbage salads.
5. Moroccan-style lemon, cumin and preserved lemon
Add ¼ tsp ground cumin, ¼ tsp sweet paprika and 1 tsp very finely chopped preserved lemon peel (rinsed, flesh discarded), and reduce the salt to a pinch, since preserved lemon is already salty. A little chopped coriander and parsley take it towards a chermoula-style dressing. Spoon it over carrots, chickpeas, couscous or grilled fish.
For a sweeter dressing, ½ tsp honey or maple syrup rounds off the sharpness in any of these. If you prefer vinegar to lemon, the same thinking applies, and our guide to olive oil and balsamic vinegar covers that classic pairing.
Using it as a lemon olive oil marinade
For vegetables, use the garlic version at 2:1 or 1:1. Toss courgettes, peppers, aubergine, mushrooms or onions in it and leave them for 30 minutes to 2 hours before roasting or grilling. Fish needs far less time: around 15–30 minutes is plenty, as lemon juice starts to firm the surface of delicate fish if left too long. Any marinade that has touched raw fish or meat should be discarded, not served as a dressing.
How to Store Lemon Olive Oil Dressing
A dressing of just oil, lemon, salt, pepper and mustard keeps in a sealed jar in the fridge for up to a week, though the lemon loses its brightness after a couple of days. Once you add fresh garlic or fresh herbs, treat it as a short-life food. Oregon State University Extension advises that fresh garlic or herbs in oil should be refrigerated and used within 4 days, because of the risk of botulism from low-acid ingredients held in oil. We follow the same rule for the garlic and herb versions here.
Don't be alarmed when the jar comes out of the fridge looking cloudy or semi-solid. Olive oil thickens and clouds in the cold; this is normal and reverses at room temperature. Take the jar out 15–20 minutes before you need it, then shake well. Never leave a garlic or herb dressing out of the fridge for hours to soften.
Is Lemon Olive Oil Dressing Healthy?
It is a simple dressing with a short ingredient list: olive oil, lemon, salt and, if you like, mustard. Compared with many bottled dressings it has no added sugar, thickeners or preservatives, and you control the salt. It is not low in calories, though. Olive oil has about 120 calories per tablespoon, so a two-tablespoon serving of our 3:1 dressing comes to roughly 180 calories, almost all from the oil.
That fat is not wasted on a salad. In a small crossover study, Brown and colleagues (American Journal of Clinical Nutrition, 2004) gave seven adults the same salad with fat-free, reduced-fat or full-fat dressing; carotenoids such as beta-carotene and lycopene were barely absorbed with the fat-free dressing and absorbed far better with the full-fat one. The dressing in that study was made with canola oil rather than olive oil, and seven people is a very small sample, so treat it as a sensible reason not to fear dressing a salad, not as proof of a health effect. Extra virgin olive oil's fat is mostly monounsaturated oleic acid, and the oil carries polyphenols that refined oils largely lack; our article on olive oil polyphenols sets out what the research does and does not show.
The objection we hear most is "isn't it a waste to use good oil in a dressing?" It is the opposite: a dressing is where you taste the difference most, and 90ml is less than a fifth of a 500ml bottle. Save the cheaper, milder oil for the frying pan.
Why Sidr & Stone
A lemon dressing is only as good as the oil in it, and the oil is the part of this recipe we can speak for. Sidr & Stone's extra virgin olive oil comes from one place, our own farm on the plains outside Marrakech, and we control every step from tree to bottle.
- Single-estate: Sidr & Stone's olive oil comes from our own family-owned farm near Marrakech, Morocco, with no blending across origins.
- Rain-fed: the trees are not irrigated; they take what the season gives.
- Organically grown: no synthetic fertilisers, pesticides or herbicides are used (not yet certified; certification is in progress).
- Single harvest: each batch is small and limited, picked when the fruit is ready, and once it is gone, it is gone until the next harvest.
- Cold-pressed: to protect flavour, aroma and polyphenols.
- Unfiltered extra virgin: minimally processed, so a little natural sediment at the bottom of the bottle is normal.
- 100% natural: a single ingredient, olive oil, with nothing added.
- Dark glass with a gold label: 500ml bottles that protect the oil from light.
- 10% of profits to charity: a Sidr & Stone commitment across every product.
- Fulfilment in the UK, EU and US.
We will not tell you ours is the best olive oil for a lemon dressing; that depends on your palate and what is in the bowl. What we will say is that it is single-estate Moroccan, rain-fed, organically grown and cold-pressed, and that in a dressing where the oil is three quarters of the jar, those details are what you taste.
Frequently Asked Questions
What is the ratio of lemon to olive oil for dressing?
The standard ratio is 3 parts extra virgin olive oil to 1 part fresh lemon juice, for example 6 tbsp (90ml) oil to 2 tbsp (30ml) lemon. Use 2:1 for a brighter dressing on robust leaves and grains, and 4:1 for delicate leaves.
How do I make a lemon and olive oil dressing?
Stir ¼ tsp salt into 2 tbsp lemon juice until dissolved, add ½ tsp zest and ½ tsp Dijon mustard if you like, then whisk in 6 tbsp extra virgin olive oil in a thin stream, or shake everything in a sealed jar for 20–30 seconds. Taste on a leaf and adjust.
Why does my lemon dressing separate?
Oil and lemon juice do not mix, so an emulsion made by whisking or shaking breaks down as the droplets of oil rejoin. It is harmless; shake it again before using. A little mustard, tahini or grated garlic slows the separation.
Can I use bottled lemon juice?
Yes, but the dressing will taste flatter. Fresh lemons give brighter juice and the zest, which carries much of the lemon's aroma. If you use bottled juice, add a little extra salt and a grind of pepper to lift it.
What is the difference between lemon dressing and lemon vinaigrette?
Very little in practice. A vinaigrette traditionally uses vinegar, so "lemon vinaigrette" usually means the same oil-and-lemon dressing, often with mustard and sometimes a dash of vinegar. A plain oil-and-lemon dressing with no mustard is what Greek cooks call ladolemono.
Is Sidr & Stone's olive oil good for salad dressings?
Yes. It is a single-estate, cold-pressed, unfiltered extra virgin olive oil, which is the grade that brings real olive flavour to a raw dressing. Dressings are where an oil's freshness and character show most clearly.
Where can I buy single-estate extra virgin olive oil?
Our Cold-Pressed Single-Estate Extra Virgin Olive Oil - Marrakech (500ml) is available directly from the Sidr & Stone website, with fulfilment in the UK, EU and US.
Is olive oil a medicine?
No. Olive oil is a food, not a medicine. It has a long traditional history — including being honoured in the Prophetic Sunnah — and a substantial body of modern research, particularly around polyphenols, cardiovascular health, and the Mediterranean diet pattern. It can be a worthwhile part of a healthy routine, but it does not cure diseases and is not a substitute for medical care. Be cautious of any olive oil marketed with specific disease-cure claims.
Final Thoughts
A good lemon olive oil dressing is less a recipe than a habit. Season the lemon, add three times as much oil, shake or whisk, taste on a leaf and adjust. Once the 3:1 ratio is second nature, the variations follow on their own: oregano for a Greek table, garlic for a marinade, tahini for something creamy, cumin and preserved lemon for a Moroccan plate.
The one thing no technique can fix is the oil. In a dressing it is eaten raw and makes up most of the jar, so use an extra virgin oil you would happily eat on bread. Our Cold-Pressed Single-Estate Extra Virgin Olive Oil - Marrakech (500ml), single-estate, rain-fed and cold-pressed, is available to pre-order now, with fulfilment in the UK, EU and US.
Our extra virgin olive oil is grown organically on our own single-estate farm on the plains outside Marrakech: we control every step from tree to bottle, and no synthetic pesticides, herbicides or fertilisers are used. It is not yet certified organic — certification is in progress, and we will publish it as soon as it comes through.
Disclaimer: This article shares a home recipe and general cooking and food-safety information at the time of writing; lemons, oils and individual dietary needs vary, and food-safety guidance can change, so check current sources. The variations may contain mustard, sesame (tahini) and garlic. Olive oil is a food, not a medicine, and is not a substitute for medical treatment of any condition. For any health concern, consult a qualified medical professional.