This is a no-cook salad built around ripe mango, thin-sliced cucumber, and red onion, dressed with lemon juice and a touch of olive oil. It comes together in 15 minutes and costs very little when mangoes are in season. That combination of sweet fruit, sharp onion, and cool cucumber is genuinely good โ no embellishment needed.
What makes this version work
The dressing here is minimal on purpose โ just lemon juice, olive oil, salt, and pepper โ which means the mango does the heavy lifting. That only works if the mangoes are actually ripe: soft at the shoulders, fragrant, and sweet. An underripe mango turns this salad starchy and flat. The second thing that matters is how thin you slice the cucumber and red onion. Thick pieces stay separate from the mango; thin pieces absorb the lemon dressing and pull the whole bowl together into something cohesive rather than a pile of individual ingredients.
Substitutions that actually work
- Mango: Fresh is best, but thawed frozen mango chunks work in a pinch โ pat them dry first or the salad will be watery. Canned mango in juice (drained well) also works.
- Lemon juice: Lime juice is a direct swap and arguably a better match for mango. Bottled works fine here since itโs used in a small amount.
- Cilantro: If cilantro is a problem, flat-leaf parsley or fresh mint both hold up well. Mint especially plays nicely with cucumber.
- Red onion: A few thinly sliced scallions are milder and work just as well. If red onion is all you have but seems too sharp, soak the slices in cold water for 10 minutes and drain.
- Cherry tomatoes: Listed as optional and genuinely optional โ leave them out if you donโt have them. They add color but donโt change the core flavor.
Make-ahead notes
Dress it at the table โ a pre-dressed salad goes limp fast. You can prep all the components up to 4 hours ahead: dice the mango, slice the cucumber and onion, and mix the lemon juice, olive oil, salt, and pepper in a small jar. Keep everything in separate covered containers in the fridge. When youโre ready to serve, combine and toss. If you do dress it early, the salad will still taste good for about 2 hours in the fridge, but the cucumber softens noticeably after that. Leftovers keep overnight but expect a pool of liquid at the bottom โ just drain it off and the flavor is still there.
Troubleshooting
- Salad tastes flat or bland: Mango varies a lot in sweetness. If yours is on the mild side, add an extra pinch of salt and a small squeeze of additional lemon juice โ both amplify the fruit flavor without changing the character of the dish.
- Too much liquid in the bowl: Mango and cucumber both release water once salted. If youโre prepping ahead, salt the cucumber slices separately, let them sit 10 minutes, then pat dry before adding to the bowl.
- Red onion overpowers everything: Raw red onion can be aggressive. Use a small onion, slice it as thin as you can, and if it still tastes sharp, the cold-water soak mentioned in substitutions fixes it in minutes.
- Mango pieces turn mushy: This happens when the mango is overripe or cut too small. Aim for roughly ยพ-inch dice โ big enough to hold its shape after tossing.
- Cilantro wilts and turns dark: Add the cilantro right before serving, not during prep. It bruises quickly once chopped and mixed with acidic dressing.
Easy Cucumber Mango Summer Salad
Ingredients
- 3 large mangoes peeled and diced (click here on โhow toโ cut melon)
- 1 medium cucumber sliced thin (unpeeled)
- 1 small red onion halved and sliced thin
- 1 handful cherry tomatoes sliced (optional)
- 2 tablespoons cilantro chopped
- 2 tablespoons lemon juice
- 1 teaspoon olive oil
- ยฝ teaspoon salt
- ยผ teaspoon ground black pepper
Instructions
- In a mixing bowl, combine all ingredients and give it a good toss.
- Transfer to a serving dish, cover with plastic wrap, and chill until ready to serve.
Nutrition
Frequently asked questions
Can I use frozen mango instead of fresh?
Yes, frozen mango works. Thaw it completely and pat the pieces dry with paper towels before using, otherwise the extra moisture dilutes the dressing and makes the salad watery.
How ripe does the mango need to be?
It needs to be fully ripe โ soft when you press near the stem end and fragrant. An underripe mango is starchy and sour, and no amount of lemon juice or salt will fix it.
Can I make this salad the night before?
Not fully assembled โ the cucumber softens and the mango releases juice overnight. You can cut everything and refrigerate the components separately, then toss with the dressing just before serving.