In this video, Chef John shows you how to make a simple ham and potato soup. This is a great recipe for using up leftover ham, and it’s easy to prepar... See moree. You’ll find out why you should taste the broth for saltiness before you add the diced potatoes, and see an easy way to get a little extra thickness and body from your soup. And in a Chef John BONUS moment, you’ll discover his simple calculation for making lump-free sauces: “Hot roux + cold stock = no lumps.” Garnished with fresh chives, this ham and potato soup is gorgeous and delicious. It really takes the chill off a fall or winter evening! See Chef John’s recipe for Ham and Potato Soup.