Tomato & mozzarella salad

I like a simple salad as a starter, and the combination of tomatoes and mozarella, with the right dressing, is particularly pleasant in summer. I like it with either balsamic vinegar dressing, or very simply with a good quality olive oil (unfiltered is best I think).

Serves 4-6:

200g buffalo mozzarella, sliced
500g tomatoes on the vines, sliced
300g mixed leaves salad (containing wild rocket and baby spinach if possible)
salt & pepper
unfiltered extra virgin olive oil