1. Finely chop the onion and bacon, sweat them off in a pan with some butter. Chop the leek, carrots and potato's add these to the pan.
2. Add the stock and simmer until the carrots, potatoes, and leeks are soft.
3. Hand blend in the pan until smooth.
4. Skin, bone and chunk the white fish up and either fry it or add it with your choice of shellfish approx 10 minutes before you serve it alond with cream. I usually just add it to the soup and simmer it for 10 minutes.