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Long Bean, Cucumber, and Tomato Salad

This vibrant long bean, cucumber, and tomato salad is an aromatic celebration of Thai flavours, balancing spicy, sour, salty, and sweet notes. A dairy-free side dish that brings a refreshing crunch to any meal, it uses traditionally bruised vegetables to better absorb the punchy dressing. The combination of pungent garlic, bird’s eye chillies, and umami-rich fish sauce creates a complex base that perfectly complements the cooling cucumber.

Ideal for a light lunch or as a zingy accompaniment to grilled meats and jasmine rice, this salad is as healthy as it is flavourful. By using a mortar and pestle to pound the ingredients, you release the essential oils and juices for a more authentic taste. It is a fantastic way to introduce fresh, crunchy textures into your midweek repertoire.

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Ingredients for Long Bean, Cucumber, and Tomato Salad

  • 2 dried Thai chillies, soaked for 2 minutes in warm water, drained

  • 3 small garlic cloves, crushed

  • 1/4 lime, cut into 3 wedges

  • 1 tablespoon palm sugar or granulated sugar

  • 1 tablespoon dried tiny prawns

  • 9 long beans (70g) or green beans, trimmed, cut into 2 1/2" lengths

  • 2 kirby cucumbers or 1 English hothouse cucumber, coarsely chopped into 1" pieces

  • 2 tablespoons Thai fish sauce (nam pla)

  • 2 tablespoons fresh lime juice

  • 6 cherry tomatoes, halved

  • 2 tablespoons crushed roasted, unsalted peanuts

How to make Long Bean, Cucumber, and Tomato Salad

Place first 4 ingredients in a clay mortar and pound with a wooden pestle until mashed into a fine paste, about 5 minutes. Add prawns; mash until pulverized and well combined, about 2 minutes. (Alternatively, process in a mini-processor until finely chopped.)

Add long beans to mortar; lightly crush with pestle to bruise. Add cucumber pieces, fish sauce, and lime juice. Mix well. Add tomatoes, lightly crush, and mix in. (Alternatively, place beans and tomatoes in a resealable plastic bag. Roll a rolling pin over bag to bruise vegetables; transfer to a bowl with the cucumber, fish sauce, lime juice, and chilli dressing.) Let marinate for 10 minutes. Stir in peanuts.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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