Tacos are perhaps the most democratic food in existence. They welcome every filling, every flavour profile, every cultural influence with equal hospitality. They are fast to assemble, endlessly customisable, and almost universally enjoyed. The taco is the vehicle; the filling is the conversation.
These smoky pulled mushroom tacos are a conversation worth having. King oyster mushrooms — also sold as trumpet mushrooms or eryngii — have a fibrous, almost meaty texture when shredded and cooked over high heat. They absorb the surrounding flavours readily, caramelise beautifully in a hot pan, and develop a pulled, stringy quality that is so satisfying it requires no comparison to anything else. It simply is what it is: excellent food.
The seasoning here draws from Mexican cooking traditions — achiote, smoked paprika, cumin, and chipotle — and the result is a deeply savoury, slightly smoky, mildly spicy filling that pairs perfectly with warm corn tortillas and a sharp, cooling tomatillo salsa.
Why King Oyster Mushrooms?
You can make pulled mushroom tacos with a number of varieties, but king oyster mushrooms are the clear first choice. Their dense, meaty stems have a texture that shreds convincingly along natural grain lines, rather than crumbling or becoming soft as other mushrooms do when cooked. They are also mild in flavour, which means they absorb marinades and seasonings deeply rather than competing with them.
If king oyster mushrooms are unavailable, large portobello mushrooms — thickly sliced rather than shredded — work reasonably well. Oyster mushrooms, torn into large pieces, are another option. The technique and seasoning remain the same regardless of variety.
Ingredients (Serves 4, approximately 2–3 tacos per person)
For the pulled mushrooms:
- 600g king oyster mushrooms
- 3 tablespoons soy sauce or tamari
- 2 tablespoons olive oil
- 2 tablespoons fresh lime juice
- 2 tablespoons tomato paste
- 1 teaspoon liquid smoke (or an additional teaspoon of smoked paprika)
- 2 teaspoons smoked paprika
- 1½ teaspoons ground cumin
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 teaspoon dried oregano
- ½ teaspoon chipotle powder or chilli flakes
- ½ teaspoon black pepper
- 1 teaspoon maple syrup
For the tomatillo salsa:
- 400g tomatillos (or green tomatoes), roughly chopped
- 1 small white onion, roughly diced
- 2 garlic cloves
- 1 jalapeño, seeded if you prefer less heat
- A large handful of fresh coriander
- Juice of 1 lime
- Salt to taste
For the pickled red onion:
- 1 large red onion, very thinly sliced
- 100ml apple cider vinegar
- 100ml water
- 1 tablespoon sugar
- 1 teaspoon salt
To serve:
- 12 small corn tortillas
- Sliced avocado or guacamole
- Fresh coriander
- Lime wedges
- Vegan sour cream or cashew cream
- Hot sauce
Method
Step 1: Quick-Pickle the Red Onion (do this first)
Combine the apple cider vinegar, water, sugar, and salt in a small saucepan. Heat over medium heat, stirring until the sugar and salt dissolve. Pour the hot brine over the sliced red onion in a heatproof bowl or jar. Leave to cool at room temperature for at least 30 minutes. The onions will turn a vivid pink and become pleasantly tangy and tender. These can be made up to a week in advance and stored in the refrigerator — they improve with time.
Step 2: Shred the Mushrooms
Clean the mushrooms with a damp cloth. Trim the very base of the stems. Using two forks, or simply your hands, shred the mushrooms along their natural grain into thin, fibrous strips. The goal is pieces that roughly resemble pulled meat — not uniform chunks, but irregular, fibrous shreds of varying lengths.
Step 3: Make the Marinade
In a large bowl, whisk together the soy sauce, olive oil, lime juice, tomato paste, liquid smoke, smoked paprika, cumin, garlic powder, onion powder, oregano, chipotle powder, black pepper, and maple syrup. Add the shredded mushrooms and toss to coat thoroughly. The marinade should coat every strand. Leave to marinate for at least 15 minutes, or up to two hours for deeper flavour absorption.
Step 4: Cook the Mushrooms
Heat a large, wide pan or cast-iron skillet over high heat. You want very high heat — this is what produces the caramelised, slightly charred edges that give the mushrooms their depth of flavour.
Add the marinated mushrooms to the dry pan (or with a very small amount of additional oil if needed) and spread in a single layer. Do not stir for two to three minutes — allow them to char and caramelise on one side. Then toss and continue cooking, spreading and pressing occasionally, for another five to six minutes until the mushrooms are deeply golden, slightly crispy at the edges, and most of the marinade has been absorbed and caramelised. Season with salt.
Step 5: Make the Tomatillo Salsa
Blend the tomatillos, white onion, garlic, jalapeño, and coriander in a blender or food processor until roughly smooth — a little texture is desirable. Season generously with lime juice and salt. Taste and adjust. The salsa should be bright, tangy, and have a good level of heat. It can be made in advance and refrigerated for up to three days.
Step 6: Warm the Tortillas
Warm the corn tortillas directly over a gas flame for 20 to 30 seconds per side until charred in spots and pliable, or in a dry pan over high heat. Keep warm wrapped in a clean tea towel.
Step 7: Assemble and Serve
Double up the tortillas for structural integrity — this is the correct way to serve corn tortillas. Layer each double tortilla with a generous spoonful of pulled mushrooms, a drizzle of tomatillo salsa, a small pile of pickled red onion, sliced avocado, and a scattered handful of fresh coriander. Serve with lime wedges, vegan sour cream, and hot sauce on the side.
The Case for Corn Tortillas
Flour tortillas are softer, more pliable, and more forgiving to work with. Corn tortillas are the correct choice for street-style tacos. They have a distinct flavour — slightly earthy and faintly sweet from the masa — that flour tortillas simply do not replicate. They are also naturally gluten-free and have a more interesting nutritional profile, being made from nixtamalised corn that has higher available calcium and amino acid content than regular corn flour.
Their one drawback is fragility — they tear more easily than flour tortillas. Doubling them resolves this completely and is authentic to how they are served in Mexico.
Nutrition
King oyster mushrooms are nutritionally impressive in a way that many people do not expect. They are a meaningful source of ergothioneine — a unique antioxidant with no plant-based equivalent — as well as beta-glucan fibre that supports immune function and healthy cholesterol levels. They also provide B vitamins, particularly riboflavin and niacin, and small amounts of vitamin D.
The combination of beans and corn tortillas in this meal provides a complete amino acid profile across the meal as a whole, making these tacos a nutritionally well-rounded dinner without any supplementation.
Entertaining with These Tacos
These mushroom tacos are outstanding for entertaining because the components can all be prepared in advance and assembled at the table. Set out the warm mushrooms, tomatillo salsa, pickled onions, avocado, sour cream, hot sauce, coriander, and lime wedges in separate small bowls and let guests assemble their own. This approach — the taco bar — is one of the most reliably enjoyable formats for casual gatherings.
Final Thoughts
The mushroom taco is not a compromise. It does not sit apologetically beside its meat counterpart, hoping to be judged on a different scale. It is simply a great taco — smoky, textural, complex, and deeply satisfying — that happens to be made entirely from plants.
Make it on Taco Tuesday. Make it on any day that needs improving. It will deliver every time.
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