Squash Soup

This is the first French soup I learnt to make years ago. Because it is so simply, I used to make it for potlucks all the time. It is just sweet squash, potato, sauteed leak, butter and stock (even just water). Here I added some curry powder too, just to make it more interesting. With or without the curry, this is a sweet and comforting soup for a cold and wet day. The sour cream just make it more comforting.