Leek and Potato Soup

I recently cooked 4 different soups, this one was well received.

6 potatoes
2 whole leeks
2 cups milk
2 cups water and 2 stock cubes(vegeta or chicken) or 2 cups chicken stock

freshly chopped chives (for garnish)
salt and pepper, to taste

Cube the potatoes and bring them to a boil in the stock.
When potatoes are almost finished, finely chop the leeks and saute them a small amount of olive oil until they have softened and are sweet add leeks to potatoes.
Cook for a few more minutes until potatoes are soft.
Puree mixture add s/p and serve garnished with chives
keep the soup nice and thick