This is a delicious soup that is made for when budgets are tight. I love this soup. This looks involved, but it's not, trust me!
Good Potato Soup
Peel and cut into bite-sized cubes of russet potatoes. I like to use them rather than reds or yellows because they tend to fall apart more easily, making for a thicker, creamier soup. Just cover with water and cook until tender. Do not drain. I do a lot and make a big pot, but you can do only 4 potatoes or so, but cut the following roux recipe in 1/2 then.
While the potatoes are cooking, put one stick of butter in your big soup pot and add one big onion, chopped. You can also use a leek or two instead if you prefer. The onions/leeks really enrich this soup with their sweetness. Once the onion is nice and soft, add 1/2 a cup of flour and cook this for a few minutes. It might look goofy, but you've made a roux that will thicken this soup. Turn this off until the potatoes are ready.
Once both parts are ready, turn off the potatoes and turn on the roux with the onions. Spoon a few ladles of water from the potatoes into the roux, stirring to make it smooth, then pour in everything from the potato pot (potatoes and the water) into the roux in the soup pot. Bring to a boil. Now you can see how thick the soup is and can add enough milk to make it the consistency you want it. It will thicken up from this point as the soup continues to cook and the potatoes cook down. Be careful never to bring the soup to a boil again as the milk will separate and make it look funny, although it will not effect the taste at all. Also, be careful not to burn it, as it does so easily. So only simmer from this point.
Lastly, I add a big pinch of dried parsley, lots of black pepper, maybe some chicken base (bullion) if I have it, and salt to taste. This soup is even better the next day.
Hope you like it!
Jayne