
King Oyster mushrooms, also known as eryngii, French Horn, or King Trumpet mushrooms, are a versatile ingredient that can be used in a variety of dishes. They are prized for their meaty texture and unique taste, as well as their ability to absorb other flavours. When it comes to cutting eryngii mushrooms, there are several techniques that can be used depending on the desired dish and presentation. Firstly, it is important to clean the mushrooms by brushing away any dirt and wiping them with a damp cloth or paper towel. For a simple preparation, the ends of the stems can be trimmed and then cut into uniform slices or rounds. For a more decorative presentation, the mushrooms can be cut into thin strips or shredded to resemble pulled meat. Alternatively, they can be sliced lengthwise to create mushroom planks or cut into thick rounds for vegan scallops. Scoring the cut side with a criss-cross pattern can add visual interest and help the mushrooms stay flat during cooking.
| Characteristics | Values |
|---|---|
| Cleaning | Brush off any dirt and wipe with a damp cloth. Avoid washing under the tap as they absorb water easily. |
| Trimming | Cut off the hard, firm ends. |
| Cutting | Cut lengthwise, widthwise, or into thick rounds. Slice thinner or thicker depending on the dish. |
| Scoring | Cut a criss-cross pattern into the flesh to help with cooking and flavour absorption. |
| Sautéing | Add to hot butter or oil with garlic, fresh herbs, salt, and pepper. Cook until golden brown on both sides. |
| Grilling | Thread onto a skewer and grill whole, basting with sauce. |
| Pan-frying | Cut into thin slices or thick rounds. |
| Shredding | Work a fork through the stem to create pulled mushroom for baking or braising. |
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What You'll Learn

Trimming the stems
Once cleaned, you can begin trimming the stems. The stems of eryngii mushrooms are edible, so you only need to cut off the very firm or dirty ends. To trim, simply cut off the ends of the stems with a sharp knife. You can then slice the stems into uniform rounds by cutting across the width of the stem. For a more rustic presentation, you can peel strips off the mushroom instead of cutting them. To do this, hold the mushroom against your cutting board and stick a fork into the stem right beneath the cap. Pull the fork towards the base of the stem, and a few small threads will peel away.
If you are preparing a lot of mushrooms, you may want to slice them in half lengthwise before trimming the stems. This will make them easier to handle and ensure even cooking. You can also score the cut sides of the mushrooms with a fine cross-hatch pattern, which will help them cook more evenly and allow seasoning to penetrate the flesh.
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Cutting the mushrooms lengthwise
King Oyster mushrooms are versatile and can be cut in a variety of ways. Here is a guide to cutting them lengthwise:
Firstly, brush away any dirt from the mushrooms and trim off the hard ends. You can also peel strips off the mushroom with a fork to create a pulled meat effect, which is great for tacos and other recipes that call for shredded meat.
Next, place the mushroom horizontally on a cutting board with the bottom part of the stem facing you. Select a large, sharp knife, such as a chef's knife, that can slice through the mushroom cleanly.
Now, start slicing the mushroom in half lengthwise, from the cap to the stem. You can cut thinner slices, but keep them the same size so they cook evenly. If you want to create mushroom "planks", slice the mushroom lengthwise without cutting it in half first.
Finally, you can score the cut sides of the mushroom with a criss-cross pattern. This will help the mushroom cook more evenly and allow seasoning to penetrate the flesh. It may also help to prevent curling when cooked.
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Scoring the cut side
Choosing the Cut
The first step is to decide how to cut the eryngii mushrooms. The most common approach is to slice the mushrooms in half lengthwise, from cap to stem. This creates a flat surface on the cut side that can be scored effectively. Alternatively, for a more rustic presentation, you can peel strips from the mushroom by sticking a fork beneath the cap and pulling towards the base, creating a shredded texture similar to pulled meat.
Scoring Techniques
When scoring eryngii mushrooms, the most popular pattern is a criss-cross or cross-hatch design. This involves making shallow diagonal cuts in one direction and then repeating in the opposite direction to create an "X" or diamond pattern. This pattern not only adds visual interest to the dish but also helps the mushrooms stay flat during cooking, especially when sautéing. You can also experiment with other scoring patterns, such as straight parallel lines or a flower pattern, depending on your desired presentation and cooking method.
Knife Selection
Selecting the right knife is crucial for effective scoring. A sharp chef's knife or a similar large knife is ideal for creating smooth, even cuts. The knife should be large enough to handle the size of the eryngii mushrooms and allow for precise, controlled scoring. A smaller paring knife can also be useful for more intricate scoring patterns or when working with smaller mushrooms.
Scoring Depth and Consistency
Consistency in scoring depth is essential. Aim for shallow cuts that only penetrate the surface of the mushroom. This ensures that the mushroom stays intact during cooking and that the scoring pattern is aesthetically pleasing. A consistent depth will also help the mushroom cook evenly, allowing heat and seasonings to penetrate the flesh uniformly. Take your time and maintain a steady hand to achieve an even scoring pattern across the entire cut side of the mushroom.
Cooking with Scored Mushrooms
Once the eryngii mushrooms are scored, they are ready for cooking. The scoring pattern helps the mushrooms absorb flavours more effectively, so consider marinating them before cooking. Sautéing is a popular choice, as the scored mushrooms develop a nice sear and take on a golden-brown colour. Grilling, pan-frying, or baking are also excellent options, depending on your recipe and desired texture. Remember that scored mushrooms may still curl slightly during cooking, so pressing them down gently or flipping them occasionally can help promote even cooking and browning.
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Cutting the cap
King Oyster mushrooms, or eryngii mushrooms, are versatile and can be used in a variety of dishes. They are native to the Mediterranean and Asia and are commonly used in Asian cuisines, especially in Chinese, Japanese, and Korean cooking. They are also a great source of vitamin D and can be a good meat alternative for vegetarians and vegans due to their firm texture and ability to hold their shape and flavour when cooked.
When it comes to cutting the cap of eryngii mushrooms, there are several techniques you can use:
First, brush away any dirt from the mushrooms and trim the ends. Place the mushroom on a cutting board with the bottom part of the stem facing you. Position your knife underneath the gills, which are the brown grooves between the cap and the stem. Make a single, horizontal slice across the stem to separate the cap. You can then cut the cap into slices or smaller pieces, depending on your desired size and the requirements of your recipe.
Another technique is to create thin strips or shreds from the cap. Hold the mushroom against your cutting board and insert a fork into the stem just below the cap. Pull the fork towards the base of the stem to peel away small threads. You can continue this process to create a shredded texture similar to pulled meat, which is great for tacos or other recipes that call for shredded meat alternatives.
Scoring the Cap
You can also score the cap of the eryngii mushroom to create a visually appealing criss-cross pattern. This technique can help the mushroom stay flat when sautéing and also allows it to absorb flavours more effectively. Start by slicing the mushroom in half lengthwise, then use a sharp knife to carefully create a diagonal criss-cross pattern on the cut side of the mushroom.
Grilling the Cap
The cap of the eryngii mushroom can also be grilled whole, either with or without the stem attached. Simply separate the cap from the stem as described above, and place it on the grill. You can also cut the cap into slices or smaller pieces before grilling, depending on your preference.
Remember to store any unused caps properly. Place the cap in an open bag and cover it with a paper towel. Stored caps can be used later for making stock or other recipes.
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Cleaning the mushrooms
King Oyster mushrooms are versatile and easy to prepare. Before cutting them, it is important to clean them properly.
Firstly, pull apart any mushrooms that are stuck together. If you are preparing a large number of mushrooms, gently rinse them under running water. If you are only preparing a few, wipe them off with a damp cloth or kitchen paper. Mushrooms absorb water very easily, so do not expose them to too much water. If your mushrooms are good quality, you only need to wash the ends. If they need a more thorough clean, quickly rinse them in running water, but do not soak them.
Next, scrub or brush off any remaining dirt or debris. You can use a damp cloth or another tool, such as a brush, to do this.
Finally, check the bottom part of the stem for any firm bits that need to be sliced off. Only the very hard ends should be removed, as the rest of the mushroom is edible.
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Frequently asked questions
Brush away any dirt from the mushrooms and wipe them with a damp cloth. If they are very dirty, you can rinse them gently under running water, but do not soak them as they absorb water easily.
Place the mushrooms on a cutting board with the stem facing you. Cut off the hard ends of the stems. You can then slice the mushrooms in half lengthwise, or cut them into thin strips or rounds, depending on your recipe.
Yes, you can score the cut side of the mushrooms with a criss-cross or cross-hatch pattern. This will help the mushrooms cook more evenly and absorb flavours better.

























