White Bean and Tuna Salad

Directions

1In a large bowl whisk together the vinegar, mustard, salt and pepper.

2Add oil in a stream, whisking until it is emulsified.

3Add the beans, the scallions, the celery, 2 tablespoons of the parsley, the dill, and the tuna. Toss the mixture lightly.

4Season with salt and pepper.

5Chill, covered, for at least an hour.

6Arrange the lettuce on a platter, mound the salad on it and garnish with the onion and parsley.