In a pestle & mortar or in a small food processor, mash together the lemongrass, garlic, chilli and coriander stems and roots. Blend with the soy sauce, sugar, rice vinegar and fish sauce, then add the oil and season with sea salt and white pepper. Tip inot a shallow bowl, add the chicken thighs and leave to marinate for at least an, or overnight.
Preheat the oven to 200C
Mix the vegetables for the salad ingredients together to make a dressing, pour over the vegetables and toss well.
Place an ovenproof griddle pan over a high hear. Add the chicken thighs and chat for a few minutes on each side, then transfer to the oven for 5-6 mimutes until tender and cooked through. Serve the chicken with the crunchy salad, a sprinkling of coriander, basil and some peanuts.
Notes
Ideally you want to cook this fabulous street-food recipe on a barbecue but if it's raining or you don't have one then you can do this on the griddle as in this recipe.