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Oyster mushrooms are a delicious treat that are available year-round in Brooklyn.

One of the best wild edible mushrooms is also one of the only ones that I can often forage for even in the middle of winter.

You’ve probably eaten oyster mushrooms at restaurants, or payed a steep price to buy some at a gourmet market (or at the Park Slope Food Coop). Oyster (Pleurotus ostreatus) is available for free in our BK parks year-round, but it is especially prolific in late fall.

The “wild” Oysters you buy are actually cultivated, not wild (you got it that we’re talking about oyster fungi, not oyster shellfish, right?). They are usually grown on logs that are inoculated with Pleurotus ostreatus spores. That gives you a clue about where you’ll find them growing wild.

(Those of you who are wondering why I am capitalizing Oyster, see my posts on Hen and Chicken mushrooms).

Pleurotus ostreatus is a decomposer mushroom that breaks down dead hardwoods. I find it on stumps and dead trees (often just higher than I can reach unassisted…sigh). Oyster is one of the few carnivorous mushrooms: its mycelia are capable of killing and digesting nematodes.

Oyster gets its common name from the shape of its fruiting bodies (that’s the part of the fungus we call the mushroom). They look a little like stacks of oyster-shaped shells, except that they have a soft texture. Unlike many other shelf fungi, the undersides of Oysters are gilled.

The stems, when present, are off center with the gills running part way down them. The tops of the caps range from off-white to beige to brown to grey.

Oyster clusters can be hefty: 0ne batch of Oysters that I weighed when I got home came in at 17 pounds! That was way more than I could eat while they were still fresh. Fortunately, Oysters dry well. My dehydrator hummed for a couple of days handling that haul.

I was so excited about that find that when I got an email from my CSA letting me know that we were going to have the chance to order freshly harvested local Oysters. I replied, “no thanks, I’ve already found plenty in Prospect Park!” There was some confusion until I realized that they were talking about the mollusk, not the mushroom!

My friend and fellow Brooklynite chef Jeremy Umansky tells me that Thomas Jefferson used to serve oyster mushrooms braised in cream on toast points as part of his Thanksgiving feasts at Monticello. Their mild flavor is at its best in creamy sauces or simply sauteed in butter or oil. They are also wonderful in this riff on the seafood stew that is a holiday classic.

“Oyster” Stew
Serves 2 as a main course, 4 as a side dish

3 tablespoons butter
8 ounces fresh or rehydrated oyster mushrooms, chopped
2 shallots, minced
1/4 cup dry sherry
3/4 cup milk
1/2 cup vegetable, fish, or oyster mushroom stock*
1/4 cup cream
Salt and pepper
1 sprig fresh parsley, minced (optional)

Melt the butter in a medium sized pot. Add the Oysters and the shallots and cook over low heat, stirring, until the mushrooms first release and then reabsorb their liquid.

Add the sherry and raise the heat to medium high. Cook, stirring, for one minute.

Add the milk and the stock and bring to a boil. Reduce heat and simmer for 5 minutes. Remove from heat.

Stir in the cream and season with salt and pepper to taste. Serve hot, with the parsley sprinkled on top of each serving.

Serve with a Long Island Sauvignon Blanc (I like the ones from Raphael and Paumanok. Red, White & Bubbly on 5th Ave. carries them both).

*If you are using dried oyster mushrooms, rehydrate them by pouring boiling hot water over them in a bowl and letting them soak for 15 minutes. Save the liquid to use as mushroom stock. Do not use stock made from other types of mushrooms for this recipe because that could overpower the delicate flavor of the Oysters.


Leda Meredith is the author of The Locavore’s Handbook: The Busy Person’s Guide to Eating Local on a Budget. She is the Gardening Program Coordinator for Adult Education at the New York Botanical Garden and an instructor specializing in edible and medicinal plants at the Brooklyn Botanic Garden. Info on her many upcoming classes and events can be found on her blog at www.ledameredith.com

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One Response to Foraging Brooklyn: Fresh ‘Oysters’ from the Parks

  1. philippe castagner says:

    oh it’s true, they are so delicious!

    the ones you forage usually outdo the cultivated ones on smell and texture, especially when they are on wood with an intact root system. I suspect it has something to do with access to nematodes and bacteria/archea that populate the rhizosphere.

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