Norfolk cabbage is high in fiber and contains powerful antioxidants, including polyphenols and sulfur compounds (2). … Norfolk Cabbage is especially high in vitamin C, a potent antioxidant that may protect against heart disease, certain cancers and vision loss ( 3 , 4 , 5 ). Norfolk Cabbage is in our Norfolk Keto Box, Norfolk Mix up Box and our Norfolk Veg Boxes. All delivered with in Norfolk on a daily basis. We love everything about Norfolk Produce.