Leek and potato Soup

I love this soup. I made it with white part of the Leek, onion, Potatoes, chicken stock, Milk mushrooms and one small carrot . A little Thyme, salt and pepper. I sauteed the onion leek and mushrooms in a little butter . I add the chicken stock and bring to the boil . Then add the carrots and sliced potatoes. When everything is cooked I blend and add milk. I sauteed the green part of the leek in a little butter and added at the end. Its great winter food .
Other great ingredients in this would be bacon , bacon fat, rosemary or minced garlic.