How to make a classic vinaigrette dressing

Photo by Ben Libby on Unsplash

The quick answer

A classic vinaigrette is an emulsion of oil and acid (vinegar or citrus) seasoned with salt and often a touch of mustard and sweetness. The usual starting point is three parts oil to one part acid. Whisk or shake until slightly thickened, taste, then adjust. That’s it: you’ve got a balanced, everyday dressing you can build on for salads, vegetables and grains.

What you’ll need

• Oil: extra-virgin olive oil for classic richness; use neutral oils (rapeseed, sunflower) if you want milder flavour.
• Acid: vinegar (red wine, white wine, cider, sherry, balsamic) or fresh lemon juice.
• Seasoning: fine salt, freshly ground black pepper.
• Emulsifier (optional but helpful): Dijon mustard.
• Sweetness (optional): a pinch of sugar, runny honey or maple to balance sharpness.
• Aromatics (optional): finely minced shallot or garlic; chopped herbs like parsley, chives or dill.

Step-by-step: make a basic vinaigrette

1. Measure your ratio

   Add 3 tablespoons of oil and 1 tablespoon of vinegar or lemon juice to a small bowl or clean jam jar. This makes enough to dress a medium salad.

2. Season the acid

   Stir the acid with a pinch of fine salt, a few grinds of pepper and ½ teaspoon Dijon mustard (optional). Dissolving salt in the acid first helps it distribute evenly.

3. Emulsify with energy

   Whisk while slowly drizzling in the oil, or put the lid on the jar and shake vigorously for 10–15 seconds until lightly thickened and glossy.

4. Balance to taste

   Taste a drop on a leaf. If it’s too sharp, add a splash more oil or a tiny pinch of sugar/honey. If it’s flat, add a dash more acid or salt.

5. Use straight away or store

   Dress your salad just before serving, or cap and chill the jar. If the dressing separates or thickens in the fridge, bring to room temperature and shake again.

Choosing oils and vinegars

Match the dressing’s character to the food you’re serving.

Choice	Best for	Flavour notes
Extra-virgin olive oil + red wine vinegar	Green salads, tomatoes, Mediterranean dishes	Fruity, peppery oil; bright, grapey acidity
Rapeseed oil + cider vinegar	Coleslaw, grain salads, roast veg	Gentle nuttiness; mellow apple tang
Sunflower oil + lemon juice	Delicate leaves, fish, spring veg	Clean, light; fresh citrus zip
Olive oil + balsamic vinegar	Caprese, beetroot, strawberries	Sweet-sour depth; syrupy richness
Sherry vinegar + olive oil	Mixed leaves, pulses, tapas-style plates	Nutty, complex acidity; robust body

Flavour balancing: salt, sweetness and umami

A great vinaigrette tastes bright but rounded. Salt lifts flavour; sweetness smooths edges; a hint of umami deepens the finish. Add salt first and taste. If the acid feels harsh, temper it with a tiny amount of sugar, honey or maple—enough to balance, not to make it sweet. For umami, a few drops of Worcestershire sauce or a teaspoon of grated Parmesan stirred in at the end can work well. Use these sparingly; the dressing should complement, not dominate.

Easy variations to try

• Mustard vinaigrette: 3:1 oil to red wine vinegar, 1 tsp Dijon, pinch of sugar.
• Lemon-herb: 2½:1 oil to lemon, chopped parsley and chives, a touch of honey.
• Honey-sherry: 3:1 oil to sherry vinegar with ½ tsp runny honey and minced shallot.
• Balsamic glaze style: 2:1 oil to balsamic; skip sweetness, add cracked pepper.
• Garlic and oregano: 3:1 oil to cider vinegar with a small crushed garlic clove and dried oregano.

Make small batches and note what you like; your house vinaigrette will come together quickly.

How to use vinaigrette

Toss with crisp leaves, spoon over sliced tomatoes, drizzle onto grilled fish or chicken, or fold through cooled grains and pulses. It also livens up steamed greens and can be used to marinate vegetables before cooking. If you plan to roast vegetables without burning them, dress after roasting rather than before; high heat can scorch the oil and aromatics.

Storage and food safety

Vinaigrette separates on standing—this is normal. Shake before use. If you’ve added fresh ingredients like garlic, shallot or herbs, keep the dressing covered in the fridge and make only as much as you’ll use in the next few days. Oil can go cloudy and thicken when chilled; let the jar sit at room temperature for a few minutes, then shake to re-emulsify.

If you’re cooking for someone with allergies or dietary restrictions (for example mustard or fish in Worcestershire sauce), check labels and swap ingredients as needed. When in doubt, seek advice from a qualified professional for specific medical concerns.

Common mistakes and easy fixes

Typical issues

• Too sharp or acidic
• Flat, lacks punch
• Greasy, won’t cling
• Bitter finish
• Overpowering garlic or herb

How to fix

• Add a splash more oil or a tiny pinch of sweetness
• Increase salt slightly or add a touch more acid for brightness
• Whisk or shake harder; add ½ tsp Dijon to help emulsify
• Use a milder oil, switch vinegar, or reduce mustard
• Dilute with plain oil and strain out large bits

Vinaigrette FAQs

Do I need mustard to make vinaigrette?

No. Mustard helps the dressing stay emulsified and adds flavour, but you can leave it out. Just shake or whisk well before serving.

Can I use lemon juice instead of vinegar?

Yes. Lemon gives a fresher, gentler acidity. Start at a 2½–3:1 oil-to-lemon ratio and adjust to taste.

Why does my vinaigrette split?

Oil and water don’t stay mixed. This is normal. Shake or whisk again before using, or add a small amount of mustard to help it hold.

Is vinaigrette suitable for vegans?

Usually, yes. Use plant-based sweeteners and avoid non-vegan additions like Parmesan or Worcestershire sauce unless labelled vegan.

Can I make vinaigrette in advance?

You can. Keep it covered in the fridge, especially if it includes fresh garlic or herbs. Bring to room temperature and shake before serving.