Light tuna and cucumber salad without mayo is one of those simple, balanced meals where freshness does all the heavy lifting. Tuna brings the protein and that satisfying bite, cucumber adds crunch and lift, and a lemony yogurt dressing ties everything together without turning it into a creamy “blob.”
The key is texture. Keep the tuna in nice big flakes, cut the cucumber into clean little cubes (or thin strips) without extra moisture, and make sure the dressing lightly coats everything instead of pooling at the bottom.
Whenever I’m craving a tuna salad but mayo feels like too much, the alternatives can be… sad. Either dry, or weirdly bland. This version fixes it: yogurt + lemon give you creaminess and brightness without stealing the spotlight. The cucumber stays crisp, so the bowl doesn’t turn into “tuna paste” after 10 minutes. Tuna in spring water (or its own juice) holds its shape better than the oil-packed stuff, which can get heavy fast. Bonus: it’s lunchbox-friendly—keep the dressing separate and stir it in right before eating. And if you need to feed two people quickly after work, everything comes together in one bowl, no fuss.
In this recipe, you’ll learn
- Why you’ll love this recipe
- Tips before you start
- What to look for when choosing ingredients
- Secrets to the perfect light tuna and cucumber salad (no mayo)
- How to serve light tuna and cucumber salad (no mayo)
- Nutrition perks
- Recipe variations
- Questions & answers
- Common mistakes
Light Tuna and Cucumber Salad (No Mayo)
Ingredients
- 185 г Canned tuna in its own juice 1 tin, drained
- 180 г Fresh cucumber 1 medium, diced
- 80 г Thick plain natural yogurt unsweetened
- 10 мл Lemon juice about 2 tsp, to taste
- 0.25 ч. л. Lemon zest finely grated
- 15 мл Olive oil 1 tbsp
- 10 г Dill or parsley finely chopped
- 0.25 ч. л. Salt to taste
- 0.25 ч. л. Ground black pepper to taste
Method
- Set a bowl and a sieve next to each other so you can work quickly: tip the tuna into the sieve and press it with a spoon 20–30 times, draining off all the liquid. Let it sit for 2 minutes at room temperature so the last drops drip out and the tuna looks noticeably drier.
- Wash the cucumber, pat it dry, and dice into small cubes (about 6–8 mm). If the centre is soft/watery, scoop it out with a teaspoon. Spread the cubes on kitchen paper in a thin layer and let them sit for 3 minutes somewhere cool—this helps the crunch last longer.
- Make the dressing in a separate cup: mix 4 tbsp yogurt, 2 tsp lemon juice, a pinch of zest, and 1 tbsp olive oil. Add 1–2 small pinches of salt and whisk with a fork for 30–40 seconds until smooth.If your yogurt is a bit thin, add 1 more tbsp and adjust the salt at the end.
- In a large bowl, gently flake the drained tuna with a fork—don’t mash it into a paste; 8–10 light presses are enough. Add the cucumber and 2–3 tbsp chopped herbs, then mix with a spatula in about 10–12 folds, keeping it fluffy and with no liquid pooling at the bottom.
- Add the dressing in stages: start with half, mix for 15 seconds, and see if the salad “gathers” on a spoon. Add the rest, or just 1–2 tbsp if that’s all you need, then finish with 2–3 pinches of black pepper. Chill for 5 minutes so the flavours settle.
Before serving, give it one more quick mix (8–10 folds) and check the balance: another pinch of salt, a few drops of lemon if needed. Serve chilled, roughly at12 °C (54 °F) on a plate or in a bowl; if it sits longer than 20 minutes, pour off any excess moisture and freshen it up with a little extra herb.
Notes
Private Notes
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Why you’ll love this light tuna and cucumber salad (no mayo)
I honestly didn’t expect a no-mayo tuna salad to feel this “together”—it sits on a spoon instead of running everywhere. A little lemon wakes the tuna up in 1 minute and takes away that canned edge. The cucumber crunches and suddenly the whole thing feels lighter. Perfect when you want a quick, protein-forward snack.
- Crisp cucumber, not watery
- Light, creamy yogurt dressing
- Protein without extra grease
- Ready in 15 minutes
- Easy to pack for lunch
Tips before making light tuna and cucumber salad (no mayo)
One step people skip: draining the tuna properly. If you don’t, the salad starts “swimming” after 5 minutes. I like the cucumber cut into small 6–8 mm cubes—best crunch, and it mixes evenly. Whisk the dressing in a separate cup and let it sit for 5 minutes so the salt dissolves and the flavour smooths out. Pepper goes in at the very end, once you’re happy with the texture.
- Press the tuna with a spoon in a sieve
- Pat the cucumber dry with kitchen paper
- Use thick, unsweetened yogurt
- Add lemon juice gradually
- Chop herbs right before mixing
What to look for when choosing ingredients for light tuna and cucumber salad (no mayo)
Tuna in spring water/its own juice is the backbone here—and brands vary a lot, even when the tins look similar. The goal is firm pieces that stay in flakes instead of dissolving into the dressing. Cucumber matters too: thin skin and a crisp centre give you that clean snap.
Canned tuna
Go for “in spring water” / “in its own juice,” in chunks. Drain completely, then gently break it into large flakes with a fork.
Fresh cucumber
Pick one that’s firm with no soft ends. If it’s a large cucumber with watery seeds, scoop the seedy core out with a spoon.
Plain natural yogurt
A thick 5–10% yogurt gives the best creamy texture. If yours is runny, strain it in cheesecloth for 10 minutes.
Lemon
Use both juice and a pinch of zest. Zest lightly—avoid the bitter white pith.
Herbs (dill/parsley)
Fresh and dry to the touch. Wet herbs thin the dressing, so pat them dry first.
Secrets to the perfect light tuna and cucumber salad (no mayo)
Once the salad stops looking “wet” and sits in a neat little mound on your spoon, you’ve got enough dressing. Add lemon juice 1 tsp at a time, then pause for 20 seconds—it sounds fussy, but it really helps the flavour settle. And don’t rush the salt: after 5 minutes resting, it tastes stronger than it does right away.
- Don’t mash the tuna into a paste
- Salt the cucumber only once it’s in the salad
- Zest: just a pinch, no more
- Let the dressing sit for 5 minutes
- Add pepper right at the end
How to serve light tuna and cucumber salad (no mayo)
On a weeknight, I serve it in deep bowls while the kettle’s on in the background. For a picnic, it goes into a container, and the dressing gets poured in right before you sit down on the blanket.
- With wholegrain toast
- Rolled in flatbread as a quick wrap
- Scooped onto lettuce leaves
- With baked potatoes on the side
- In a lunchbox, dressing kept separate
Nutrition perks of light tuna and cucumber salad (no mayo)
Tuna gives you a solid hit of protein, and yogurt keeps things creamy without that mayo heaviness. Cucumber and herbs add volume and freshness for relatively few calories. It’s especially handy if you’re planning a lighter workday lunch or want to balance out dinner without actually cooking a whole production.
- Protein from tuna
- Moderate fat thanks to yogurt
- More volume from vegetables
- Works well for a light lunch
Recipe variations for light tuna and cucumber salad (no mayo)
If you want it more filling, add something hearty like sweetcorn or beans. If you’re in the mood for a sharper kick, stir a little mustard into the dressing. Use what you’ve got—this salad is forgiving.
- Add a hard-boiled egg, diced
- Toss in a handful of sweetcorn
- Mix with white beans
- Add 1 tsp mustard to the dressing
- Swap part of the cucumber for avocado
If you’re after something light and fresh without heavy sauces, take a look at this tuna and cucumber salad—tender tuna, crunchy cucumber, and a yogurt dressing that tastes clean and nicely balanced.
Questions & answers
Even without mayo, this salad can still be creamy and hold its shape.
How do I make the dressing thicker without mayo?
Use a thick 5–10% yogurt, or strain regular yogurt for 10 minutes. You can add an extra 1–2 tsp yogurt, but go easy on the lemon.
Why is tuna in its own juice better than tuna in oil here?
The flavour stays cleaner and the texture is firmer. Oil-packed tuna makes the salad heavier and can mask the freshness of the cucumber and herbs.
What if my cucumber is very watery?
Scoop out the seedy core with a spoon, dice it, then pat the cubes dry on a towel for 3 minutes before mixing.
How long does it keep in the fridge?
In a sealed container, up to 18 hours. For the best crunch, keep the dressing separate and mix right before serving.
Common mistakes when making light tuna and cucumber salad (no mayo)
Sometimes it turns watery because the cucumber releases juice after salting, plus the tuna still has liquid from the tin. Other times it feels dry—usually when the yogurt is extremely thick or you didn’t add enough because you were worried it would taste “too dairy.” Don’t stress. Just keep the order straight: texture first, then salt and acidity.
Why did the salad turn runny after 10 minutes?
The cucumber was juicy and got salted too early, and the tuna wasn’t drained well. Pat the cucumber dry, drain the tuna completely, and salt only after mixing.
Why does the lemon taste sharp and harsh?
Too much juice went in at once. Add it 1 tsp at a time, mix, then pause for 20 seconds so the flavour can settle.
Why did the tuna turn into mush?
It was mixed too aggressively. Flake it with a fork first, then fold with a spatula in about 10–12 strokes so you keep the pieces.
Why is the dressing too thin?
The yogurt was drinkable/runny, or the herbs were wet. Use thick yogurt (or strain it for 10 minutes) and pat the herbs dry.
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