Christmas pumpkin soup with bacon - Κολοκυθόσουπα με μπέικον

1 kg pumpkin, cleaned, peeled and chopped in pieces
1 chopped onion
1 chopped leek
Chicken stock
150 gr cream
Salt and pepper
Margarine or butter.
To serve: fried chopped bacon, croutons, grated cheese (kefalotyri or parmesan)

[dexdexter]

I have tasted this chefs cooking, she is a wonderful cook.