In flavour, midway between cabbage and turnip, the edible portion is the swollen stem just above soil-level. HEALTH BENEFITS: High in vitamin C - Anti-ageing, wound healing, decreasing blood cholesterol and prevention of infections. Assists the body in absorbing iron. Potassium - Regulates heart rhythm, nerve impulses and muscle function - and fibre. COOKING HINTS: Grate for use in salads or boil cut up 'roots' for use in soups and stews.