Arugula salad with walnuts,apples and radishes is a refreshing winter dish. Spicy arugula leaves are tossed with tart apples, piquant radishes, and buttery walnuts - flavors that compliment each other. However, the highlight of this salad is the rose vinaigrette. It adds a floral sweetness that is distinct yet not overwhelming. Blue cheese would also be delicious in this salad.