First chill sweet corn kernels in refrigerator for half hour.
Take a saucepan and heat oil in it. Add the sweet corn kernels, green and red peppers and spring onions. Cook over a medium heat for over 5 minutes, until softened.
Transfer the vegetables into a salad bowl. Stir in the coriander and tomatoes.
To make the dressing, combine all the dressing ingredients in a small bowl and whip up well. Use dressing sparingly over the sweet corn mixture. Season with salt and pepper. Toss well and serve immediately when the salad is still warm.
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