A simple, quickly made relish of thinly sliced cucumber, shallot, and fresh chilli in a sweetened rice vinegar dressing — served as the standard accompaniment to satay (Entry TH-57), gai yang (Entry TH-26), tod man pla (Entry TH-25), and many other Thai grilled and fried preparations. Ajaad is the Thai equivalent of the French cornichon alongside a rich preparation — its acid and crunch are designed to cut through the fat and caramelisation of fried and grilled food, providing both the physiological benefit of acid in a high-fat meal and the textural contrast of fresh crisp cucumber against the yielding, caramelised protein.
**Composition:** - Cucumber: peeled (or half-peeled for texture contrast), halved, de-seeded (the seeds add excess water that dilutes the dressing), sliced thin. - Shallots: thinly sliced. - Fresh red chilli: sliced thin — for colour and mild heat. - Dressing: rice vinegar (white, mild) with a larger proportion of sugar (approximately 3:1 sugar:vinegar by volume — the relish should taste predominantly sweet with a clean acid note, not sharply vinegary), dissolved with salt. - Fresh coriander at service — optional. **The sugar-vinegar ratio:** Thai ajaad is notably sweet — the sugar:vinegar ratio is the inverse of most Western vinaigrettes. This sweetness is not a deficiency but a deliberate design: against the caramelised sweetness of the grilled meat, the ajaad's sweetness echoes rather than contrasts, while its acid provides the only sharp note in the combination. Decisive moment: Tasting the dressing for the sweet-acid balance. The dressing should taste immediately sweet, with a clean, bright acid note following — not sharp, not mild. Adjust: add more vinegar if the sweetness overwhelms; add more sugar if the acid sharpness is the primary register.
David Thompson, *Thai Food* (2002); *Thai Street Food* (2010)