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Award-winning chef, author and forager Alan Bergo. Food is all around you.

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Cream of Porcini Soup with Black Walnut Pesto

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cream of boletus rex veris soupA little while ago I got to make a fun dinner for my grandparents and their friends. We usually do around one or two of these each year, and they are a lot of fun for me to put together. Instead of making things I know everyone will have tasted before in Minnesota, like walleye and steak, I try to find interesting and obscure things people have never eaten before. The exception to the funky food rule is that I usually try to showcase a few of the beautiful pheasants my grandpa has hunted during their season. The last dinner included whelks from Britain, (giant marine sea snails) paw paw cheesecake, pheasant breasts (skin on of course) and this soup.

The soup was the simplest dish of everything that I put together, but it was also the most fun. Dishes don’t have to be incredibly complicated to be good, especially when the starlet of the show is to be the obscure boletus-rex veris, or spring porcini.

Earlier that year a bunch of boletes showed up that the suppliers told us were porcini. I was a bit skeptical though, since the flavor was slightly different than porcini, and plus, it was spring- porcini fruit in the fall. Also strange was the fact that the mushrooms slowly stained blue occasionally when dried, which I know never happens with porcini.

Initially I thought that the mushrooms could be queen boletes, since their caps were also a bit darker than I see with porcini. However, I know from finding queen boletes in Minnesota that they fruit at or around the same time as porcini as well the white king bolete and others, such as tylopilus felleus, the bitter bolete.

Doing a bit of research into seasonal fruitings in Oregon quickly gave me the answer to my confusion, these mushrooms were none other than boletus rex-veris, the spring porcini. The seasonal timing, occasional blue discoloration when drying, and slightly darker color of their caps were the keys to unlocking their true identity.

I had been saving some of these beauties that I had dried, and wanted to make something decadent to showcase their individual flavor, which is very similar to usual porcini, but a bit more delicate, subtle.

I don’t always cook with cream and dairy, as I know some people eschew them on account of the calories. There is just something magical that happens when dried mushrooms are cooked with cream though, it amplifies their flavor and intensifies it, as anyone who has ever eaten  a cream of morel soup can attest to.

What I came up with was a simple, yet rich little soup which is really nothing more than porcini, onion, cream and meat stock for body potatoes are added since they give a velvety texture.  If you like, you could substitute chopped button mushrooms for the potatoes if you want a more traditional cream of mushroom soup, they will serve as a binding agent, although it will be a bit more loose, which is fine.

I kept the ingredients to a minimum to allow the unique flavor of the boletus rex veris shine, and it did. The addition of the black walnut pesto adds a bit of color and texture to explore while eating, as the soup by itself would be a very rich experience.

When I served it at the dinner party it also had a couple of croutons on it, which were great, and I definitely suggest adding them. The photo of this dish is more of a conceptual shot, garnished with toasted black walnuts to show their fun shapes, and with the pesto being swirled by running toothpicks through it, a nod to some of the cheesy/old-school French cuisine I adore from the 80s.

This is not a soup to make to feed a crowd, it one to feed people who appreciate all that is porcini. It is not a meal either, but rather a starter course to be followed by other dishes, as the serving size of 4 oz should tell you.

cream of boletus rex veris soup
Print Recipe
5 from 3 votes

Cream of Dried Porcini Soup 

Yield: 2 qts of soup
Prep Time15 mins
Cook Time30 mins
Course: Soup
Cuisine: Italian
Keyword: Black Walnuts, Melon Soup, Porcini
Servings: 4

Ingredients

  • 4 cups 2oz dried boletus rex-veris, porcini, or other boletes like leccinums or slippery jacks
  • 1 cup hot water
  • 1/2 cup dry white wine
  • 4 cups chicken stock
  • 2 cups heavy cream
  • 1/2 cup white onion
  • 2 cups peeled and diced russet potato you could also use golden potatoes
  • 1 bay leaf dried or fresh
  • Salt and white pepper
  • 8 tbsp black walnut pesto recipe here
  • Croutons of your choice to garnish whole grain would be a great choice

Instructions

  • Heat the water to boiling in a pot and then pour over the mushrooms, allow to rehydrate for 10 minutes and then agitate the mushrooms vigorously in their liquid to remove any dirt. Remove the mushrooms from their liquid, strain the liquid through a fine strainer or cheese cloth, and then add back to the mushrooms.
  • Saute the onion until soft and translucent in a soup pot, making sure they do not brown, season them lightly with kosher salt. Add the wine and cook until most of it has evaporated, then add the potatoes, stock, porcini and their liquid.
  • Cook the soup covered at a gentle simmer until the potatoes are very tender, about 15 minutes.
  • Add the cream, now working in small batches if necessary, puree the mixture in a blender, alternatively you can puree the mixture with a hand blender.
  • Season the soup with salt until the porcini flavor really hits you in the face, then season with a little ground white pepper.
  • When the soup is finished, ladle it into the smallest soup bowls you have and serve, topping with the croutons and black walnut pesto. 1 cup of soup per person is ample, it is very rich.

Related

Previous Post: « Black Walnut Pesto
Next Post: Wild Mushroom Conserve (Pickled Mushrooms) »

Reader Interactions

Comments

  1. Zoran

    June 25, 2015 at 6:30 am

    Hi Allan;
    I live in Southern Ontario, Canada.
    I was in the Salt Cellar yesterday, taking advantage of my visit to Minneapolis, and tried your cream of bolete soup.It was exquisite! Generally, the food was really good. I was happy to see that you have the recipe here, but I noticed that a link in ” 8 tbsp black walnut pesto, recipe here” is missing, although you do have a recipe on the site.

    Reply
    • Alan Bergo

      June 27, 2015 at 10:04 am

      Thanks for the heads up, I fixed the link.

      Reply
  2. John B.

    December 7, 2018 at 12:26 pm

    How can I make this and get away from the dairy products for allergy reasons?

    Reply
    • Alan Bergo

      December 8, 2018 at 1:09 pm

      Make a stock with roux using fat, omit the cream and use stock, omit the cheese from pesto.

      Reply
  3. Kelly H

    October 17, 2021 at 5:34 pm

    5 stars
    Just finished making a pot of this. It’s delicious. I’m always hesitant to cook porcini any way but sauté because I can’t bear to lose any of that flavor. You’re right though, this recipe amplifies it. Pure porcini love. Thank you Chef Bergo!

    Reply

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Alan Bergo
Morels: the only wild mushroom I count by the each Morels: the only wild mushroom I count by the each instead of the pound. 

Good day today, although my Twin Cities spots seem a full two weeks behind from the late spring. 2 hours south they were almost all mature. 

76 for me and 152 for the group. Check your spots, and good luck! 

#morels #murkels #mollymoochers #drylandfish #spongemushroom #theprecious
The first time I’ve seen fungal guttation-a natu The first time I’ve seen fungal guttation-a natural secretion of water I typically see with plants. 

I understand it as an indicator that the mushrooms are growing rapidly, and a byproduct of their metabolism speeding up. If you have some clarifications, chime in. 

Most people know it from Hydnellum 
peckii-another polypore. I’ve never seen it on pheasant backs before.

Morels are coming soon too. Mine were 1 inch tall yesterday in the Twin Cities. 

#guttation #mushroomhunting #cerioporussquamosus #pheasantback #naturesbeauty
Rain and heat turned the flood plain forest into a Rain and heat turned the flood plain forest into a grocery store. 

#groceryshopping #sochan #rudbeckialaciniata #foraging
Italian wild food traditions are some of my favori Italian wild food traditions are some of my favorite. 

Case in point: preboggion, a mixture of wild plants, that, depending on the reference, should be made with 5-23 individual plants. 

Here’s a few mixtures I’ve made this spring, along with a reference from the Oxford companion to Italian food. 

The mixture should include some bitter greens (typically assorted asters) but the most important plant is probably borage. 

Making your own version is a good excercise. Here they’re wilted with garlic and oil, but there’s a bunch of traditional recipes the mixture is used in. 

Can you believe this got cut from my book?!

#preboggion #preboggiun #foraging #traditionalfoods
Oh the things I get in the mail. This is my kind Oh the things I get in the mail. 

This is my kind of tip though: a handmade buckskin bag with a note and a handful of bleached snapping turtle claws. 😁😂 

Sent in by Leslie, a reader. 

Smells like woodsmoke and the cat quickly claimed it as her new bed. 

#buckskin #mailsurprise #turtleclaws #thisimylife #cathouse
Bluebell season. Destined for a Ligurian ravioli Bluebell season. 

Destined for a Ligurian ravioli as a replacement for the traditional borage greens. 

#mertensiavirginica #virginiabluebells #spring #foraging
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