Yes — use greek yogurt instead of mayonnaise 1:1. The recipe asks for mayonnaise and you have Greek yogurt. This is the most popular swap in this family, because it runs in the light direction: yogurt brings tang and protein where mayonnaise brings fat, so the dish gets fresher and lighter — and in most cold food, nobody misses the fat.
How much greek yogurt to use
| Mayonnaise in the recipe | Greek yogurt to use |
|---|---|
| 1 tbsp | 1 tbsp |
| 1/4 cup | 1/4 cup |
| 1/3 cup | 1/3 cup |
| 1/2 cup | 1/2 cup |
| 3/4 cup | 3/4 cup |
| 1 cup | 1 cup |
| 2 cups | 2 cups |
The ratio is 1:1. All amounts above are approximate — measure with a tablespoon or a measuring jug, and taste as you go.
Worked example 1: a tuna salad
A tuna salad asks for 1/4 cup of mayonnaise per tin of tuna. Use 1/4 cup of Greek yogurt instead and the salad will be tangier, lighter and fresher, with a clean flavour that lets the tuna show through. Add a teaspoon of olive oil if it feels too lean, and a pinch of salt — yogurt is less salty than mayonnaise, so the seasoning needs a nudge. This is the swap's best use: a cold, simple dish where tang is an asset.
Worked example 2: a ranch-style dip
A dip asks for 1 cup of mayonnaise, herbs and garlic. Use 1 cup of Greek yogurt instead, and cut any lemon juice in the recipe in half, because the yogurt already brings acidity. The dip will be thicker and tangier, and it will hold up better in the fridge — yogurt dips keep their texture, while mayonnaise dips can go oily. Thin it with a splash of milk if you want a pourable dressing rather than a thick dip.
Worked example 3: the wrong recipe — a mayonnaise-based aioli
An aioli asks for 1 cup of mayonnaise, and the mayonnaise is the emulsion that makes the sauce: oil, egg and acid held together in a thick, stable cream. Greek yogurt cannot be an aioli — it is not an emulsion, it has no oil to carry the garlic, and the result is a garlicky yogurt dip, which is a fine thing but is not aioli. The lesson is that mayonnaise is a structure, not just a flavour, and yogurt cannot build that structure.
What changes when you use greek yogurt
Texture is the first thing that changes, flavour the second. Creamy spreads all swap 1:1 in sandwiches and dips, so the amount never needs maths, but richness and tang shift with every choice. Mayonnaise is the richest and the most neutral, with a smooth, almost silky body. Sour cream is tangier and a little looser, and it thins when it warms. Greek yogurt is the tangiest and the lightest, with a fresh acidity that wakes up a sandwich but can curdle if it is heated hard. Hummus is thicker and earthier, with a nutty, savoury depth, and mashed avocado is the softest and most buttery, but it browns within the hour. The practical difference is heat: mayonnaise splits when it is heated, so it belongs in cold food, while sour cream and yogurt can be warmed gently but should never be boiled. Choose by the job — richness, tang, or freshness — not just by what is in the fridge.
When not to substitute
Do not use Greek yogurt instead of mayonnaise where the mayonnaise is an emulsion doing structural work — aioli, and any sauce that depends on oil and egg held together. Do not heat yogurt hard: it can curdle if it is boiled, so add it at the end and keep the heat low. And do not use a flavoured or sweetened yogurt — it must be plain, full-fat Greek yogurt, or the swap will taste wrong.
Method and source
The 1:1 ratio comes from the CookScale substitution data, which records that creamy spreads swap 1:1 in sandwiches and dips and that richness and tang are what change. This is a spoon-for-spoon swap, so no weighing or density figure applies; a tablespoon of one spread replaces a tablespoon of another. Treat the result as approximate: brands vary in thickness, especially Greek yogurt and hummus, so spread a little, taste, and add more rather than piling it on at once. The same data warns not to heat mayonnaise — it splits — and that warning is the one rule in this family that has no exceptions.
Practical guidance
Keep these spreads in small tubs and label the date you opened them, because a swap made with a tired tub is worse than no swap at all. Sour cream and Greek yogurt keep about two weeks once opened; mayonnaise keeps much longer, and hummus about a week. If you are swapping for health reasons, Greek yogurt is the lightest choice, but add it at the end of cooking and keep the heat low, or stir it in off the heat entirely. For sandwiches, spread the wetter ingredient — yogurt or sour cream — on the bread first and add the filling on top, so the bread does not go soggy. And when avocado is the substitute, a squeeze of lemon juice buys you an extra hour before it browns.
Use plain, full-fat Greek yogurt, not low-fat and not flavoured. Full-fat yogurt is thick enough to stand in for mayonnaise; low-fat yogurt is too thin and too sharp. If the swap tastes too tangy, a teaspoon of olive oil and a pinch of sugar per half cup will round it out.
Buying and storing
Buy these spreads in small tubs and use them within a week or two of opening: sour cream and Greek yogurt keep for about two weeks, hummus for about a week, and mayonnaise for much longer. Label the date you opened a tub, because a swap made with a tired spread is worse than no swap at all. Keep mayonnaise in the fridge door, where the temperature is steadiest, and keep yogurt and sour cream towards the back, where it is coldest. If a tub smells sharp or looks watery on top, stir it once — a little liquid on top of yogurt is normal — but if it smells off, throw it away. For a party, put the dip in a small bowl set over ice, so it stays cold and safe while people help themselves.
Frequently asked questions
Can I use Greek yogurt instead of mayonnaise?
Yes, 1:1, in sandwiches, salads and dips. The result is tangier and much lighter. Use plain, full-fat Greek yogurt, and halve any lemon juice in the recipe because the yogurt already brings acidity.
Is Greek yogurt healthier than mayonnaise?
Yes, by a wide margin: Greek yogurt has far fewer calories, almost no fat, and much more protein. It is the standard healthy swap for mayonnaise, and in most cold dishes it tastes better too.
Can I use Greek yogurt instead of mayonnaise in coleslaw?
Yes, and it is excellent. The tang suits cabbage, and the slaw stays crisp longer because yogurt is less oily. Use half yogurt and half mayonnaise if you want the classic richness as well.
Will Greek yogurt curdle if I heat it?
It can, if it is boiled. Add it at the end of cooking, off the heat or on very low heat, and never let the dish boil after it goes in. Full-fat yogurt is more stable than low-fat.