Dice the onionPeel and roughly chop the potato into golf ball sized pieces.
Soup
Heat the butter in a large sauce pan over a medium heat.
Add the diced onion and sauté until soft sweet and fragrant.
Add the diced potatoes and cook in the butter for 3-5 minutes.
Add the stock, cover the sauce pan with a lid and simmer for 15-20 minutes until the potatoes are tender.
Blend the potatoes and stock until smooth, add milk until you achieve a thick velvety soup texture.
Taste and season with salt and pepper as needed.
Enjoy.
Notes
Be sure to use a floury variety of potato. I'm based in New Zealand, my favourite type of potato for this recipe is Agria. Other floury varieties include Maris Piper, Russet, King Edward and Russet.
The better the stock you use, the better the soup will be! Save the chicken bones from a roast chicken dinner and make your own bone broth.
My kids love adding a small handful of grated sharp cheddar cheese into the bottom of their soup bowl before adding the hot soup.
Garnish is not essential, but crispy bacon, grated cheese, chopped parsley chives or fresh herbs and a little sour cream can make this humble soup more impressive.
Butter: I like the richness that butter brings to this simple soup recipe, but you can substitute this for olive oil, or any oil you have in your pantry.
Onion: I use brown onions in this recipe. You could of course substitute this for leeks. Leeks are mild and sweet and are perfect in a potato soup or in a chicken leek pie.
Potatoes: Just like baked mashed potatoes, or scalloped potatoes the best potatoes for soup are the flour varieties such as Agria, Yukon Gold or Russet potatoes.
Stock: When I make this soup I use chicken bone broth made in the crockpot. I would recommend a chicken or vegetable broth or stock for this soup.
Milk: I use cows milk when I make this recipe, but you can use your favourite diary-free milk