Kachumber
Cucumber, tomato and red onion, deseeded, diced to 5mm and dressed only as the curry goes down: the one cold, sharp thing on a rich plate

Yield: 6 portions
Portion: ~90g
Prep: 20m
Cook: 2m
Total: 22m
Ingredients
Vegetables
- 250 g cucumber, 1 medium, watery core scraped out, 5mm dice
- 3 firm tomatoes, seeds and jelly scooped out, 5mm dice
- 1 small red onion, finely diced, rinsed and patted dry
- 1 green chili, deseeded and minced; leave it out next to a hot curry(optional)
Dressing (at the table)
- 1 tsp cumin seeds, toasted and ground; you need 0.5 tsp of the powder
- 1 lime, juiced
- ¾ tsp fine salt
- black pepper, freshly ground, to taste
- 2 tbsp coriander, chopped just before serving
Method
Prep (the morning of)
- 1
Toast the 1 tsp cumin seeds in a dry pan over medium heat for about 90 seconds, shaking, until they darken a shade and smell nutty. Grind them and measure out ½ tsp; keep the rest in a jar.
2mmediumsmall dry frying panToasted cumin (bhuna jeera) is a different ingredient from ground cumin out of a jar. Raw ground cumin tastes muddy in a raw salad; toasted, it tastes warm and slightly smoky, and it is most of the seasoning here besides salt and lime.
- 2
Halve the 250 g cucumber lengthways and scrape out the watery core with a teaspoon, then dice it to 5mm. Halve the 3 tomatoes, scoop out the seeds and jelly, and dice them to match.
8mDeseed both. The tomato jelly and the cucumber core are where nearly all the leaking comes from, and they are the difference between a salad and a bowl of pink liquid. Dice to 5mm, smaller than a normal salad: kachumber is eaten in spoonfuls alongside curry and rice, and a coarse dice is awkward to eat that way.
- 3
Finely dice the 1 red onion, rinse the dice under cold water for 20 seconds and pat dry. Deseed and mince the 1 chili if using.
4mThe harsh, lingering bite of raw onion comes from sulphur compounds formed on the cut surfaces, and they are water-soluble. A short rinse washes them off without taking away the crunch or the sweetness.
- 4
Keep the cucumber, tomato, onion and chili in the fridge, undressed, and keep the herbs apart. Chop the 2 tbsp coriander only just before serving.
3mTip: Everything except the dressing can be done in the morning. Nothing gets salted until the plates are on the table.
Dress at the table
- 5
As the main course goes down, combine the vegetables in a bowl with the juice of 1 lime, ¾ tsp fine salt, the ½ tsp toasted cumin, a few turns of black pepper and the chopped coriander. Toss and put it on the table straight away.
2mSalt on cut cucumber and tomato draws water out by osmosis within minutes, which is the useful half of salting and draining everywhere else and the problem here. Dressed kachumber left standing for twenty minutes is vegetables sitting in their own liquid. Dress it at the table.
Salting and Draining VegetablesTip: Taste it once dressed: it should be sharp and bright. If it needs more, add lime before salt, since more salt only pulls out more water.
Dietary
Storage & Shelf Life
Refrigerated
Temperature: 0-4°C
Shelf life: 1 day
Freeze: Not recommended
Not reheated; it is served cold. Once dressed it does not keep: eat it the same day and drain off the liquid first.
Plating
In a shared bowl with a spoon, on the table next to the curry, the naan, the rice and the mint chutney. It is a side people help themselves to, not a plated element.
Garnish: A little extra chopped coriander
Serve in: Shared bowl with a serving spoon
Temperature: Cold; dressed immediately before serving
Techniques Used
The Story Behind This Dish
“Kachumber went on the table at a Saturday Indian dinner for seven in Basel next to butter chicken, garlic naan, basmati and mint chutney. Its job on that plate was contrast. The butter chicken is rich, creamy and warm-spiced, the naan buttery, the rice neutral; this is the only cold, raw, acidic thing there, and a spoonful alongside each mouthful of curry cuts through the cream the same way the mint chutney does. The recipe is plain on purpose. What it depends on is three small disciplines: deseed both the cucumber and the tomatoes, dice everything fine, and do not let salt touch it until it is about to be eaten.”
Wine pairing: Whatever is poured with the curry. An off-dry Amigne de Vétroz (two bees) or an Alsace Pinot Gris with a touch of residual sugar carries both.
Disclaimer: The information provided in this recipe, including preparation methods, storage guidelines, and shelf-life recommendations, is for general guidance only. We accept no responsibility for any foodborne illness or adverse effects resulting from the preparation, handling, storage, or consumption of food made using this recipe. Always follow safe food handling practices and consult official food safety guidelines.
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