The more limited produce offerings of colder months encourage me to get creative with salads. In place of fresh greens, I’ll often use a base of radicchio, chicory, endive, or even thinly shaved root vegetables. I brighten up dressings with citrus zest, parsley, or flavored oils and vinegars, which offer a nice contrast to the earthiness of winter vegetables. Walnut and hazelnut oil are my favorites: they’re pricey but intensely flavorful, so a small amount goes a long way.