Diced Cucumber Salad

I saw Jacques make this on his show "Fast Food My Way", but I don't think it is in the book. At any rate, it is delicious, simple, and, of course, fast.

1 medium cucumber
1 scallion, finely sliced
small piece of white onion, finely diced
1 large tomato (or 2 small)
4 teaspoons olive oil
1 teaspoon red-wine vinegar
1 tablespoon fresh tarragon, chopped
salt and pepper to taste
6 butter-lettuce leaves

Peel cucumber, cut in half, and scrape out seeds. Cut each half in half width-wise, then cut into 1/4-inch strips. Line all the strips up and cut into a dice. Place diced cucumber in a bowl.

Add remaining ingredients to bowl, taste for salt and pepper, and let sit (mascerate) for about 15 minutes. Serve a in butter-lettuce lined dish.

Serves 2