Sarah Brown
Trumpet mushrooms, also known as royal trumpet, king trumpet, king oyster mushrooms, or French horn mushrooms, are tall, thick fungi that can be cooked in a variety of ways. They have a distinct juicy nuttiness when cooked and are often compared to scallops in terms of appearance and texture. Trumpet mushrooms can be grilled, seared, pulled, or eaten raw, and they pair well with various ingredients such as soy sauce, sesame oil, rice vinegar, maple syrup, garlic, and ginger. When grilling, it is recommended to preheat the grill to medium heat and cook the mushrooms for 10-15 minutes, depending on their thickness. With their meaty texture and umami flavor, trumpet mushrooms are a versatile ingredient that can be used in appetizers, salads, sandwiches, and main courses.
| Characteristics | Values |
|---|---|
| Mushroom type | Trumpet/King Trumpet/King Oyster |
| Mushroom cut | Crosswise/lengthwise/rounds |
| Thickness | 1-inch thick/quite thick |
| Grill type | Stove-top cast iron griddle/barbecue/pan |
| Grill heat | Medium-high heat |
| Oil | Olive oil/coconut oil/ghee/sesame oil/unsalted butter |
| Seasoning | Salt and pepper/red pepper flakes/lemon zest/garlic/ginger/scallions/sesame seeds |
| Marinade | Soy sauce/rice vinegar/maple syrup |
| Cook time | 10-20 minutes |
| Texture | Meaty/scallop-like |
| Serving suggestion | Appetizer/side dish/sandwich filling/grain bowl topper/steamed bao bun/rice bowl |
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What You'll Learn
How to cut trumpet mushrooms for grilling
Trumpet mushrooms are tall, tree-like fungi that are a variety of oyster mushrooms. They have a thick white stem and a flat brown cap.
When preparing trumpet mushrooms for grilling, it is recommended to cut them into slices about an inch thick. This cut creates a similar appearance and texture to scallops. You can also cut the mushrooms lengthwise into halves or thirds, depending on their size. Scoring the cut side with a crosshatch pattern of small incisions helps the mushrooms cook faster and more evenly, while also increasing their ability to absorb flavour.
To prepare the mushrooms for grilling, dip the slices or halves in oil, coating both sides, and sprinkle with salt and pepper. Some recipes also recommend dusting the mushrooms lightly with flour before grilling.
Place the mushrooms on a preheated grill or cast-iron griddle over medium-high heat. Sear both sides for several minutes until the mushrooms develop a char and release their juices. The mushrooms are ready when they are golden brown and crisp.
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Marinade and seasoning
Trumpet mushrooms are a great vegan option for grilling, with their meaty texture and juicy taste. Before grilling, it is important to season and marinate the mushrooms to enhance their flavour.
Firstly, prepare the mushrooms by cutting off any substrate on the bottom. You can also brush off any substrate with a damp towel or your hands. If you want to enhance the mushroom's meaty texture, cut them lengthwise into thick slices. For a softer, more delicate texture, similar to scallops, slice the mushrooms into rounds. Scoring the surface of the mushroom slices in a crisscross pattern will help them absorb the marinade better and cook more evenly.
For a simple seasoning, dunk the slices in a high-heat oil, such as olive oil, refined coconut oil, or ghee, coating both sides. Sprinkle with salt and pepper and place on the grill. For a softer mushroom, you can spritz or brush the mushrooms with oil before grilling. Alternatively, you can cook the mushrooms without oil for the first few minutes and then add oil and salt afterward for a meatier texture.
For a more complex marinade, combine soy sauce, sesame oil, and rice vinegar in a large shallow dish. Add thinly sliced mushrooms and toss to coat evenly. Set aside for 15 minutes, tossing once halfway through. You can also add maple syrup, garlic, and ginger to the marinade.
Another option is to marinate the mushrooms with sate sauce, soy sauce, oyster sauce, and five-spice powder for 20-30 minutes before grilling. This creates a spicy, flavourful dish.
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Grilling methods
Grilling king trumpet mushrooms is a simple process that can be done on a grill or a cast-iron griddle. Before grilling, it is important to clean the mushrooms and cut off any substrate on the bottom. You can also cut the mushrooms into planks or slices, with the latter being similar in texture to scallops.
Once the mushrooms are prepared, preheat your grill or cast-iron griddle to medium heat. You can then choose to spritz or brush the mushrooms with oil or cook them without oil for a meatier texture. If you do use oil, it is recommended to use a high-heat oil such as olive oil, refined coconut oil, or ghee. Sprinkle the mushrooms with salt and pepper and place them directly on the grill grates.
Grill the mushrooms for several minutes on each side until they are cooked through and have a char on the outside. A good indication that the mushrooms are done is when you see the juices coming to the surface and the mushrooms start to shrink.
After grilling, the mushrooms can be served in various ways. They can be served as a vegan sandwich filling, a grain bowl topper, or simply on white rice. They can also be garnished with red pepper flakes, fresh corn, onion sprouts, or microgreens.
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How to tell when trumpet mushrooms are grilled
Grilled trumpet mushrooms are a delicious treat, but how can you tell when they are grilled to perfection?
Firstly, it is important to understand the unique characteristics of trumpet mushrooms. They are tall, tree-like fungi, with thick white stems and beige or brown caps. They are also known as king trumpet, royal trumpet, or king oyster mushrooms. When cooked, they have a meaty texture and a juicy, nutty taste.
Now, let's get into the details of grilling. Before placing the mushrooms on the grill, they should be cut into slices, preferably about an inch thick. You can cut them lengthwise or into rounds, depending on the desired texture. A lengthwise cut will give them a meatier texture, similar to scallops, while slicing them into rounds will result in a softer texture. It is also recommended to score each side of the mushroom slices in a crisscross pattern, which helps the mushrooms cook more evenly and absorb more flavour from the marinade.
Next, the mushrooms should be seasoned or marinated. You can simply sprinkle them with salt and pepper, or for a more complex flavour, marinate them in a mixture of soy sauce, sesame oil, rice vinegar, maple syrup, garlic, and ginger. This marinade will give the mushrooms a sweet and savoury flavour profile. After marinating, the mushrooms are ready for the grill.
So, how can you tell when they are perfectly grilled? Firstly, the grill should be preheated to medium-high heat. This is important because if the heat is too high, the mushrooms will burn on the outside before cooking through. Place the mushrooms directly on the grill grates and sear them for several minutes on each side. You will know they are done when they develop a deep, dark char and release their juices. The mushrooms will also shrink slightly and become softer.
Finally, grilled trumpet mushrooms are best served hot. They can be garnished with a sprinkle of red pepper flakes, scallions, or sesame seeds, and served as a tasty vegan appetizer or side dish.
Now you know how to grill trumpet mushrooms and identify when they are cooked to perfection!
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Serving suggestions
Grilled trumpet mushrooms can be served as a standalone dish, or as part of a larger meal. They can be eaten either raw or cooked.
When grilled, trumpet mushrooms have a meaty texture and appearance, similar to scallops. They can be served as a tasty vegan or vegetarian main course, or as an appetizer. They can also be served as a side dish, as part of a larger Asian-inspired feast, with tofu sushi or peanut miso noodles, for example.
For a simple grilled appetizer, sprinkle the mushrooms with salt and pepper and place them directly on the grates. Sear for a few minutes to get a dark char. Garnish each bite-sized piece with a sprinkle of red pepper flakes.
For a more complex flavour, marinate the mushrooms in a mixture of soy sauce, sesame oil, rice vinegar, maple syrup, garlic, and ginger. When the mushrooms are browned, add the marinade to the pan and toss to coat. Sprinkle with sesame seeds and scallions before serving.
Grilled trumpet mushrooms can also be served on white rice, in a steamed bao bun, or as a vegan sandwich filling. They can be shredded and served in a sandwich with pickled carrots, red onion, and herbs.
For a heartier meal, serve the grilled mushrooms on polenta with a basil vinaigrette, or on grilled bread with an herby, cheesy dressing. They can also be served with noodles, brown butter, and fresh herbs, or with grilled corn on the cob and onion sprouts.
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Frequently asked questions
Start by cleaning the mushrooms with a damp towel or your hands to brush off any substrate. If you notice any dirt, use a folded paper towel or pastry brush to brush it away. Avoid washing the mushrooms as you don't want them to absorb water.
Cut the mushrooms crosswise into slices about an inch thick. You can also cut them lengthwise or into rounds, which will give them a texture similar to scallops.
Some people prefer to grill mushrooms without oil, but using oil will make them softer. Dunk or dip the slices in a high-heat oil like olive oil, refined coconut oil, or ghee, and sprinkle with salt and pepper before placing them on the grill.
Preheat your grill to medium-high heat. Really high heat will burn the mushrooms, and low heat will make them take too long to cook.
Grill each side of the mushroom slices for about 3 minutes, then baste with marinade and grill for another minute or so on each side. Thick mushrooms will need 10-20 minutes to cook, while thin mushrooms will cook in 7-12 minutes.
