Cucumber Tomato Onion Salad
Cucumber, tomato and onion cut fresh and tossed with lemon and salt, the everyday cooling side to any Indian meal.
Ingredients & method
Method
Amounts inside the steps follow the servings dial, so you never have to hold the arithmetic in your head.
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Prep the vegetables
Dice the 2 Cucumbers, medium and 2 Tomatoes, medium to a similar size, and thinly slice the 1 Onion, medium.
Cutting everything to roughly the same size gives an even bite in every spoonful.
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Tame the onion
In a mixing bowl, toss the sliced onion with the juice of 1 Lemon and half the Salt to taste. Set aside for 5 minutes.
A short soak in acid and salt breaks down the sulphur compounds that make raw onion taste sharp and bitter.
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Combine everything
Add the 2 Cucumbers, medium, 2 Tomatoes, medium, 1 Green chili and 2 tbsp Cilantro to the onion. Toss well.
Adding the softer vegetables after the onion has mellowed keeps them from turning watery too early.
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Season and rest
Sprinkle over the ¼ tsp Black pepper, ½ tsp Cumin and remaining Salt to taste. Toss once more and let the salad rest for 5 minutes before serving.
A short rest lets the flavours mingle without the vegetables sitting long enough to turn soggy.
About
Kachumber is the plate of raw, cut vegetables that shows up beside almost every Indian meal, and its name is thought to come from the Hindi kachmar, to crush or pound, a nod to how roughly the vegetables used to be broken down before a knife did the job.
Salad in the composed, dressed, Western sense barely existed in traditional North Indian and Pakistani home cooking; what took its place was exactly this — a small heap of sliced onion, tomato and cucumber with salt, pepper and a squeeze of lemon, there to cool the mouth down between bites of a hot curry rather than to be a dish in its own right. The trio of cucumber, tomato and onion is considered non-negotiable across regional versions, though households add raw mango in summer, grated carrot or radish for colour, and green chilli or roasted cumin for those who want more bite. The same basic idea travelled with Indian communities to East Africa, where it is known as kachumbari and eaten alongside pilau and grilled meats, and it sits in the same family as the Levantine Arab salad, Persian Shirazi salad and Mexican pico de gallo — different kitchens arriving at the same solution of raw, acid-dressed vegetables to cut through rich food.
This version keeps it simple and oil-free: the onion is given a short soak in lemon juice and salt before the rest goes in, which takes the raw edge off it without any cooking at all.
Cook’s notes
Salt the onion first and let it sit in the lemon juice for a few minutes before adding the rest — this is what tames the sharp, sulphurous bite rather than leaving it harsh.
Cut the cucumber and tomato just before serving; salted vegetables release water on standing and the salad turns watery if it is cut too far ahead.
Deseed the cucumber if it is a watery variety, and deseed the tomato too if you want a drier, crunchier salad rather than a juicy one.
Health benefits
- Cucumber is mostly water, which makes this a naturally low-calorie, hydrating side.
- Tomato contributes vitamin C and lycopene, an antioxidant linked to heart and skin health.
- Onion, eaten raw, keeps more of its sulphur compounds and quercetin than cooked onion does.
- The whole salad is high in fibre relative to its calories and is completely oil-free.
General information about the ingredients, not advice about you. Nothing here is a medical or dietary recommendation, and no dish treats or prevents any condition. If you are managing a health condition, pregnant, or on a prescribed diet, ask a doctor or a dietitian.
Cons & who should be cautious
- Raw onion in any quantity can disagree with acid reflux or IBS, and is best eaten in moderation by anyone sensitive to it.
- This salad is not cooked, so wash all vegetables thoroughly, especially if serving to very young children, pregnant women, or anyone with a compromised immune system.
- Those on a low-sodium diet should go easy on the added salt, since it is the main seasoning here.
Not a complete allergen declaration. Ingredient lists describe what we used and cannot account for cross-contamination or what your particular brand contains, so check the packaging of everything you cook with.
Nutrition facts (estimated)
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