Step 1

To make the dressing, in a bowl, whisk together the mayonnaise, sour cream, garlic, anchovies, chives, parsley, tarragon, lemon juice, vinegar, salt and pepper until well combined. Set aside.

Step 2

Halve the lettuce heads lengthwise and thinly slice the radishes crosswise. Arrange the lettuce on a serving platter or distribute among salad plates. Sprinkle with the radish slices, drizzle with the dressing and serve immediately. Serves 4.

Step 3

Adapted from Williams-Sonoma Salad of the Day, by Georgeanne Brennan (Weldon Owen, 2012)