Radish is one of the nutritious root-vegetables featured in both raw salads as well as in main recipes. This widely used root vegetable belongs to the family of Brassica.In Chinese culture, radish along with cabbage and soybean curd (tofu) has been believed as healthful and sustenance food.adish is one of the nutritious root-vegetables featured in both raw salads as well as in main recipes. This widely used root vegetable belongs to the family of Brassica.