Ingredients

2 teaspoons cider vinegar

1 teaspoon red-wine vinegar

1 tablespoon minced shallot

1 teaspoon Dijon mustard

1/4 cup safflower oil

1/4 cup extra-virgin olive oil

Coarse salt and freshly ground pepper

2 tablespoons finely chopped walnuts

6 medium heads Little Gem lettuce, halved lengthwise

Preparation

Whisk together both vinegars, shallot, and mustard. Gradually whisk in both oils; season with salt and pepper. Stir in walnuts.

Arrange lettuce on a large platter; spoon vinaigrette evenly over top and serve.