Thai Cucumber Salad (Ajat)

Ajat is the cool, sweet-sour relish served alongside satay and other rich grilled foods in Thailand: crisp cucumber, thin shallots, and red chile in a clear vinegar syrup. It is a relish, not a tossed salad — the vegetables sit briefly in syrup and stay crisp, and they are mixed with the syrup only just before serving.

Ingredients

Serves 4 as a side.

• 1/4 cup granulated sugar
• 1/4 cup distilled white vinegar
• 1/4 cup water
• 1/4 tsp kosher salt, plus more to taste
• 1 English cucumber (or 2 small cucumbers), quartered lengthwise and thinly sliced
• 4 small shallots (or 1 small red onion), thinly sliced
• 1 long red chile (fresno or similar), thinly sliced — or 1 Thai bird’s eye chile for more heat
• 2 tbsp chopped cilantro leaves (optional)

Method

1. Make the syrup: combine the sugar, vinegar, water, and salt in a small saucepan. Bring to a boil over medium-high heat, stirring until the sugar dissolves completely. Remove from heat and cool to room temperature. (The syrup can be made ahead and refrigerated in a jar.)
2. While the syrup cools, slice the cucumber, shallots, and chile. Keep everything cold.
3. Just before serving, put the cucumber, shallots, and chile in a serving bowl and pour over enough cooled syrup to barely cover the vegetables. Toss gently.
4. Garnish with cilantro if using. Serve immediately at room temperature or lightly chilled.

Tips and ingredient notes

• This is a relish, not a tossed salad. Mix the vegetables with the syrup only just before serving — the acid softens and discolors them if they sit.
• Vinegar: distilled white vinegar is the standard across Thai sources. Rice vinegar gives a milder result — an acceptable variation, not the default.
• Cucumber: English/seedless cucumbers need no peeling or seeding. If using regular cucumbers, peel and scoop out the seeds so the relish does not go watery.
• Chile choice: long red chiles (fresno) give mild heat and color; Thai bird’s eye chiles make it genuinely spicy.
• Make-ahead limits: the syrup keeps refrigerated for weeks; the assembled relish does not — it goes soft within hours. Do not assemble ahead.

Storage and food safety

Allergen note: none inherent in this recipe. Standard produce handling applies: wash cucumbers and chiles, and refrigerate the assembled relish if not served immediately — do not leave it at room temperature for more than 2 hours (FoodSafety.gov perishable guidance). The vinegar syrup is not a preservative at this dilution; treat it as a fresh salad.

Sources and references

• FoodSafety.gov — perishable-food handling guidance.

Thai Cucumber Salad (Ajat)

Thai cucumber salad (ajat): crisp cucumber, shallots, and chiles in a sweet-sour vinegar syrup — the classic relish served with satay.

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Servings: 4

Course: Salad

Cuisine: Thai

Ingredients Method

Ingredients

  

• 1/4 cup granulated sugar
• 1/4 cup distilled white vinegar
• 1/4 cup water
• 1/4 tsp kosher salt, plus more to taste
• 1 English cucumber (or 2 small cucumbers), quartered lengthwise and thinly sliced
• 4 small shallots (or 1 small red onion), thinly sliced
• 1 long red chile (fresno or similar), thinly sliced — or 1 Thai bird's eye chile for more heat
• 2 tbsp chopped cilantro leaves (optional)

Method

 

1. Make the syrup: combine the sugar, vinegar, water, and salt in a small saucepan. Bring to a boil over medium-high heat, stirring until the sugar dissolves completely. Remove from heat and cool to room temperature. (The syrup can be made ahead and refrigerated in a jar.)
2. While the syrup cools, slice the cucumber, shallots, and chile. Keep everything cold.
3. Just before serving, put the cucumber, shallots, and chile in a serving bowl and pour over enough cooled syrup to barely cover the vegetables. Toss gently.
4. Garnish with cilantro if using. Serve immediately at room temperature or lightly chilled.