When you're in a hurry, serve the soup with cornbread instead of the polenta sticks.
• If don't make your own low-salt stock, try a high-quality commercial stock rather than a stock cube to keep the added salt to the minimum.
• Celery and fennel provide potassium. Celery also acts as a diuretic, helping to reduce fluid and salt retention.
• White fish is very low in fat and kilojoules.
GI estimate medium.