What is a good soup to make (that is somewhat fast) on a chilly day?

This is one I make when I am in a hurry. Cut up a potato in smallish chunks, slice some celery and carrot. Chop an onion. Cook barely covered in salted water. When done mash slightly with a potato masher so you have some chunks and some puree. Add milk to get it to the consistency you want and adjust seasonings. Feel free to add any other vegs. you like as well. Very simple soup but tasty and quick to make.