Peel and slice the shallots thinly and fry till golden. Drain on kitchen paper.
Peel and chop the garlic and deep fry till golden.Drain on kitchen paper.
In a small bowl, make the dressing by mixing together the fish sauce, the light soy, lemon juice and sugar.
Cut the green tomatoes in quarters ,and the cucumber and chilli into matchsticks..
Drizzle 2 tbsps of the dressing on the tomatoes,cucumbers and chilli. Marinate for 10 minutes.
Lightly roast and roughly crush the peanuts.
Finely chop the coriander.
To assemble the salad, take a large bowl and put in the marinated vegetables followed by the prawns and herbs.
Pour in the remainder of the dressing an gently mix with a light hand.
Sprinkle with fried garlic, shallots and peanuts, give it a final toss and serve immediately.