It wasn't my recipe, but it looks good, huh?
Here's the recipe via Jamie Oliver:
Serves 4
4 x 150g balls of buffalo mozzarella
2 handfuls of good mixed ripe tomatoes, of different shapes and sizes
the white of 1 spring onion, very finely sliced
extra virgin olive oil
good-quality herb vinegar
for the dressing:
a big handful of fresh basil leaves
sea salt and freshly ground black pepper
extra virgin olive oil
First make your dressing. Keeping a few leaves aside for later, roughly chop the basil and pound with a good pinch of salt in a pestle and mortar. Add a splash of oil and stir it in to make a lovely smashed basil dressing.
Carefully tear the mozzarella on to a large serving plate. Chop the tomatoes roughly into chunks and dress in a bowl with the spring onion, some olive oil, a little herb vinegar and some salt and pepper. Place the tomatoes in and around the mozzarella and drizzle the basil sauce over the top. Sprinkle with the reserved basil leaves and serve.
As you can see, it's simple without exact measuring (frustrating for me, but alas).
It's even more delicious with homemade vinaigrette.