Filling and Refreshing Cold Sweet Potato Vichyssoise
I love soup, so I am looking for some interesting cold soups that I can serve on these hot summer days that are filling and refreshing. I found a great recipe in one of my favorite cookbooks, Williams-Sonoma's New Orleans.
What I like about this cookbook, besides the beautiful collection of recipes, is the photographs and the descriptions of Old New Orleans. It is a mini-history book as well as an inspiration for cooking. And a portion of the profits goes to help the hurricane victims.
I wanted to adapt the recipe to make it vegetarian, but I didn't have any Veggie Stock Gold on hand and needed more time and the inclination to make a vegetarian stock on short notice.
Veggie Stock Gold is a 20 to 1 classic vegetarian stock made by the same folks who make some of my other favorite stock reductions and demi-glace for sauces.
The recipe calls for using chicken stock, but I had some duck stock reduction called Glace de Canard Gold and a 20 to 1 reduction of classic duck stock. It is similar to chicken stock but has a bit more flavor, so why not try it?
I also increased the ingredient amounts to make a little more, but I have to warn you, I did not increase the cayenne pepper, and everyone thought it was a little too spicy. I liked the extra kick but be careful. I would opt to use less and add more after tasting.
Classic vichyssoise is not made with sweet potatoes (sometimes called yams) but with regular potatoes. I like what they did with this recipe by adding extra color and flavor from the sweet potatoes and ginger.
It can be served as a starter, but I like it on a hot night with a side of salad for a light, refreshing meal. I even had it for breakfast one morning, and it was great.
📖 Recipe
Sweet Potato Vichyssoise
Ingredients
- 6 cups stock chicken - vegetarian - duck
- 3 good sized sweet potatoes
- 3 leeks they usually come in bunches of three
- Freshly ground pepper if you have it but black pepper will work
- 2 teaspoons fresh ginger - peeled and grated
- ¼ teaspoon cayenne pepper - Warning - read above
- 1 cup heavy cream
- Sea salt to taste
- Chopped basil for garnish the original called for chives but I had fresh basil on hand so I went with it
Instructions
- Have the stock ready to go whether you make it yourself, buy it canned, or reconstitute the stuff I like.
- Peel and quarter the sweet potatoes.
- Leeks - You are only going to use the white and tender green parts of the leeks so cut the hairy tip off the root as well as the dark green leafy top which by the way would be a great ingredient for your own veggie stock. Leeks can be full of sand, so you want to cut them up into ¼ inch slices, separate the rings and wash them well in a colander under cold running water.
- Ginger - Peel and grate the ginger. I use a spoon for peeling and my Microplane grater/zester. Works great for these types of jobs.
- In a pot big enough to hold all these ingredients (I used a 4 ½ quart sauce pot that worked fine), add the stock, sweet potatoes, and leeks and bring to a boil over medium-high heat. Once at a boil, reduce heat, cover, and simmer until the potatoes are fork-tender about 20 minutes.
- When done, remove the pot from the heat and let it cool before pureeing.
- 2) Here, you can use a blender or food processor and work in batches to puree the potatoes, stock and leeks. I prefer to use my hand blender to minimize the cleanup and avoid the mess from spilling during transfer. Whatever method you use, you want the ingredients to become a smooth puree.
- 3) Before you finish, add the pepper, cayenne, ginger, and puree. If you used a blender or food processor, pour the soup into a large bowl and let it cool since I used a hand blender and left everything in the pot.
- 4) Add the heavy cream and stir to mix well once the soup becomes lukewarm. Here's a good time to taste and adjust the seasoning with a little salt, and I can almost guarantee it will need salt to boost the flavor.
- 5) Cover and refrigerate for at least 4 hours until the soup is well chilled.
Notes
Some of My Favorite Soup Recipes
- You Won't Believe This Simple Eggplant and Couscous Soup Recipe
- Braised Beans and Spinach with Pecorino Romano Cheese Recipe
- Watermelon Gazpacho Recipe
- Black Eyed Peas and Bacon Soup Recipe
- Vegetable Stock Recipe
- How to Make Cooking Stocks for Soups Stews and Sauces
- Instant Pot Black Bean Soup Recipe
- The Last Mushroom Soup Recipe You Will Ever Need
Jonathan Horwich
Again, this is excellent. The text even makes it clear that the longer you leave it in the refrig the better. Most cookbooks tell you to serve at once after chilling. I found that cold soup improves in flavor in the refrig and kept wonderfing if I were alone in this observation. Jonathan
shawn kelly
This is one of a kind recipe. I really love the taste. I use food processor to puree it and still, it gives excellent taste. I also agree to the fact that the more you leave it in the fridge, you'll get more better taste. This recipe change the way i think about soup.
Becky Cade
I substituted 8 oz of Greek yogurt for the cream to bring down the fat content. It added a little bit of tanginess and was delicious.
Hi Becky, thanks for the substitution tip. Sounds delicious. - RG
Sherry
I found that roasting the potatoes gives them more color and better flavor, plus no need to peel.
The Reluctant Gourmet
Very interesting point Sherry. Thanks for sharing it.
Mike King
This may sound silly, but leeks are a little expensive where I live... Question: Would one leek and one large sweet onion be sufficient as a means to substitute for three leeks? Would it throw off the taste of the soup? TY. Michael
G. Stephen Jones
Of course it would taste different but who knows, you may enjoy it more with the sweet onion. Give it a try and see what you think.
David
To quote the recipe: "3 tablespoons good sized sweet potatoes"
should 'tablespoons' be in there? Seems 3 good sized potatoes would be the goal.
Am I off-base here?
Thanks
G. Stephen Jones
David, you are not off base. It should be 3 good sized potatoes as well as 3 leaks. Thanks for the catch.