A couple months ago, I briefly mentioned making a wild mushroom soup from Gourmet magazine that was, you know, good, but also, eh. But shame on me, really, because last year we found the perfect, best-ever, fail-proof, tastiest recipe so why did I fall for the shiny new thing? Isn’t that the point of all this trial-and-error, anyway? I’m always trying to catalogue Recipes That Work, also called Recipes to Share you know, the ones that you try and you think “This is it. This is everything I have ever wanted from a [insert beloved grub here],” even if yes, I know, most people probably do not share my fanaticism about beloved grub. Lemon cake? Done. Banana bread? Found that too. Easy-peasy rustic loaf? Yup, and hooray for that. Chocolate cookies so good, it may bring tears to your eyes? That’s for tomorrow, because I am a tease, and also because I think about them again, I might eat five. Best-ever mushroom soup? I will never doubt you again.
What was missing from the bland mushroom soup was bulk. So many varied soup recipes come down to a similar process: a sauté of onions, leeks or garlic and herbs, a pile of vegetables simmered in stock until soft, then pureed and topped with cream, grated cheese or a splash of booze or if you’re super-lucky, all three. But if you want to make it taste like more than watery vegetables, you’re going to need some volume. Balthazar’s cream of mushroom soup has over two pounds of sliced mushrooms with a relatively small volume of broth coaxing it gently into soup form — there’s nothing more worthy of your spoon. You might, ahem, even determine that it tastes so good, that no, you will not share it and will instead eat it standing over the pot, hungry husbands be damned, even when they catch your selfishness on film. But then again maybe not, as you’re probably a nicer person than me. One can only hope.
[Note: This recipe got fresh photos in 2018.]
Balthazar's Mushroom Soup
- 1 ounce dried mushrooms (porcini, morels, or shitakes)
- 1/2 cup olive oil
- 2 fresh sprigs of rosemary
- 4 fresh sprigs of sage
- 1 large yellow onion, peeled and thinly sliced
- 3 garlic cloves, peeled and thinly sliced
- 1 1/2 teaspoons salt
- 1/4 teaspoon freshly ground white pepper
- 1 pound white button or cremini mushrooms, cleaned and thinly sliced
- 1 pound shitake mushrooms stemmed, cleaned and thinly sliced
- 6 cups chicken stock, vegetable stock, or water
- 1 cup heavy cream
- 2 tablespoons unsalted butter
Prepare your dried mushrooms: Soak them in 1 cup of boiling water for 20 to 30 minutes, until plump. Remove them from the liquid and mince the mushrooms, setting them aside. Strain the soaking liquid through a coffee filter to remove grit and reserve this too.
Make the soup: Bundle your sage and rosemary together with kitchen twine. Heat the olive oil in a large pot over a medium flame. Bundle the rosemary and sage together and tie with kitchen twine. When the oil is hot, add the herb bundle and sizzle for a few minutes on both sides to infuse the oil. Add the onion, garlic, salt and pepper and cook for 5 minutes, until the onion is soft and translucent but not brown. Turn the flame to high and add the white mushrooms and shiitakes. Cook for 10 minutes, during which the mushrooms will give off their liquid (which should evaporate quickly due to the high heat) and deflate significantly. Stir occasionally.
Add the chicken stock and the dried mushrooms along with the soaking water. Simmer for 30 minutes.
Remove the herbs, then add the cream and butter. Working in batches, puree the soup in a blender (or, if you have an immersion blender, it makes this much easier; you can work right inside your pot) until your desired consistency, or fully smooth. Return to the pot and keep at a very low simmer until ready to serve.