1.Scatter the leaves of lettuce and rinse them well.
2.Put the lettuce in a bowl containing ice cold water for 30 minutes.
3.Once done, drain and wipe with a kitchen towel.
4.Cut the leaves in bite sized pieces.
5.In a salad bowl, mix lettuce with tomatoes and spring onions.
6.Refrigerate the mixture.
7.Stir in basil in the dressing and shake well.
8.Drizzle the dressing over the salad five minutes prior to serving.
10.Serve in a bowl.