Dressings built on acid, oil and aromatics
Learn the starting ratio for a vinaigrette built on acid, oil and aromatics, how to balance it for different cuisines, and how to store dressings safely.
Most dressings that taste right, whatever cuisine they come from, start from the same base: about three parts oil to one part acid, a pinch of salt, and aromatics chosen to suit the flavors you want. The acid might be vinegar, citrus juice or a fermented liquid. The oil might be neutral, or a stronger olive or sesame oil. The aromatics might be fresh herbs, grated ginger, chilies or toasted spices. Once you know what each part does, the same formula can move from a sesame and rice vinegar dressing for cucumbers to a red wine vinegar and olive oil dressing for bitter greens, without a separate recipe for each.
The three-to-one ratio is a starting point, not a rule. Lime and lemon juice differ in sharpness, and a strongly flavored oil, such as toasted sesame or a peppery extra virgin olive oil, can carry more acid before the dressing tastes thin. Sweet or salty additions such as honey, fish sauce or miso change how much acid you need. Judge the balance on a leaf or a slice of the vegetable you plan to dress, because a dressing often tastes different once it coats food.
Salt, sweetness and an emulsifier
Dissolve the salt in the acid before adding the oil. Salt does not dissolve in oil, so salt stirred into the oil sits in gritty pockets and seasons the salad unevenly. A pinch of sugar or a teaspoon of honey softens a sharp vinegar and makes the flavors feel rounded, a common move in many Japanese and Southeast Asian dressings.
Oil and acid separate on their own. Shaking a jar or whisking creates a temporary emulsion that often breaks within minutes to an hour. An emulsifier holds the droplets together for longer. Smooth Dijon mustard, a teaspoon of white miso, a spoonful of tahini or a small grated garlic clove all work, and each brings its own flavor. A teaspoon of mustard is enough to keep a basic vinaigrette together through a meal, while tahini thickens a dressing into something creamy that clings to leaves.
Choosing the acid and aromatics
Each acid pulls a dressing in a different direction. The table pairs common options with the kinds of dishes they suit.
Scroll sideways to see the full table →
| Acid | Character | Suits |
|---|---|---|
| Rice vinegar | Mild and faintly sweet | Cucumber, sesame and seaweed salads |
| Lime juice | Bright and floral | Chili, fish sauce, herbs and cabbage slaws |
| Lemon juice | Clean and rounded | Olive oil, parsley, mint and grilled vegetables |
| Sherry vinegar | Nutty and mellow | Hearty greens, chickpeas and roasted squash |
| Chinese black vinegar | Malty and slightly sweet | Cold noodles, dumplings and shredded vegetables |
Citrus zest adds fragrance without adding more liquid acid. Rub the finely grated zest of one lemon or lime into the salt before the juice goes in, and the oils in the peel will spread through the dressing. This lifts the flavor without thinning it, which is useful when a dressing already has enough sourness.
Raw aromatics can overwhelm a dressing. Thinly sliced shallot or onion softens if it sits in the acid for about ten minutes before the oil goes in, which mellows its bite. Spices give more when they are warmed first. Toast cumin or coriander seeds in a dry pan until fragrant, grind them, and stir them into the oil over low heat for a minute or two. Let the oil cool before it meets the acid, so the dressing does not taste cooked.
Storing and adjusting the dressing
Keep dressings made with fresh garlic, shallot or herbs in oil refrigerated, and use them within a few days. Garlic and herbs submerged in oil at room temperature can support bacteria, including the kind that causes botulism, so do not leave those mixtures on the counter. A vinaigrette made from vinegar with dried spices keeps about a week in the refrigerator. A citrus-based dressing tastes best within a day or two, because citrus loses its brightness quickly. Shake the jar before every use, because the oil will have separated.
When a dressing tastes flat, it usually needs salt or acid before it needs more oil. When it tastes harsh, a little sweetness, a little more oil or a spoonful of something creamy will soften it. If it is too thick to pour, thin it with a spoonful of warm water, which loosens it without diluting the flavor much.
Change one thing at a time, in this order: salt, then acid, then sweetness, then aromatics. Stir well and taste again after each change, because a small adjustment to salt can make the acid seem sharper or softer than it did a moment before.
A useful way to practice is to pick one flavor set and build around it. Lime, fish sauce, a little sugar and a pinch of chili make a Vietnamese-style dressing that suits shredded cabbage and carrot. Rice vinegar, toasted sesame oil and grated ginger suit cucumber. Lemon, olive oil, sumac and mint suit tomatoes and cucumbers in the Levant. Once the ratio feels second nature, each new combination becomes a small adjustment rather than a new recipe.