Bibb Lettuce and Herb Salad with Vinaigrette

Buy heads of "live" Bibb lettuce, hydroponically grown and shipped with roots still attached in plastic containers. If the roots are kept moist, the lettuces will remain garden fresh in the vegetable drawer of your refrigerator for up to a week. You can substitute arugula or chicory, both peppery greens, for the lettuce.To keep herbs fresh, wrap them loosely in a damp paper towel and store in a zippered plastic bag in the vegetable drawer of the refrigerator.