Korean Butter Soy Grilled King Oyster Mushrooms
Quick answer
Three king oyster mushrooms are quartered lengthwise, scored on the surface, and seared in butter until golden on one side.
What makes this special
- Crosshatch cuts help king oyster mushrooms absorb a rich butter and soy sauce glaze.
- Crosshatch cuts draw butter-soy sauce deep into the king oyster flesh
- First half of butter browns the mushroom; remaining butter carries the glaze
Key ingredients
Core cooking flow
- 1 Slice 3 king oyster mushrooms lengthwise into quarters, then score the flat...
- 2 In a small bowl, combine 1.5 tbsp soy sauce, 1 tbsp oligosaccharide syrup, 1...
- 3 Heat a skillet over medium, melt about 7 g butter, then place the mushrooms...
Three king oyster mushrooms are quartered lengthwise, scored on the surface, and seared in butter until golden on one side. After flipping, the remaining butter joins a sauce of soy sauce, oligosaccharide syrup, minced garlic, and black pepper, which reduces into a glossy glaze that coats every groove cut into the mushroom flesh. The scoring allows the sweet-salty sauce to penetrate deeper, so each bite releases a concentrated burst of buttery umami. King oyster mushrooms hold their dense, meaty chew even after cooking, making this dish satisfying without any actual meat. A final scattering of scallion and sesame seeds adds freshness and textural contrast.
Instructions
Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.
- 1Heat
Slice 3 king oyster mushrooms lengthwise into quarters, then score the flat cut side in a shallow crosshatch pattern to create channels that help the glaze absorb evenly during cooking.
- 2Season
In a small bowl, combine 1.5 tbsp soy sauce, 1 tbsp oligosaccharide syrup, 1 tsp minced garlic, and a pinch of black pepper, stirring until the sugar is fully dissolved and the mixture is smooth.
- 3Prep
Heat a skillet over medium, melt about 7 g butter, then place the mushrooms scored side down without crowding and sear undisturbed for 4 to 5 minutes until the cut face turns deep golden.
- 4Control
Once the seared side is a deep golden brown, flip each mushroom piece, pour in the remaining butter and the prepared sauce, and simmer for about 2 minutes while occasionally spooning the liquid over the top.
- 5Control
Take the pan off the heat as soon as the sauce has reduced to a thick, glossy glaze that evenly coats each piece and clings visibly inside the scored grooves.
- 6Finish
Arrange on a serving plate, scatter 1 tbsp of thinly sliced scallion evenly across the top, then finish with a sprinkle of 1/2 tsp sesame seeds for fragrance and a gentle crunch.
After the steps
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Korean Grilled King Oyster Mushrooms
Saesongi-beoseot-gui is a Korean grilled king oyster mushroom dish where the mushrooms are sliced lengthwise to 0.7-centimeter thickness, seared in melted butter until golden on both sides, then glazed with a sauce of soy sauce, minced garlic, oligosaccharide syrup, and black pepper. King oyster mushrooms contain a lot of moisture, so arranging the slices in a single layer without overlap is essential-crowding steams rather than sears, preventing the Maillard browning that gives the surface its golden color and savory depth. Butter burns quickly above medium heat, so temperature control is key, and the soy glaze should only be added after both sides are already browned so it coats the surface rather than making it soggy. Chopped chives and sesame seeds scattered on top add a nutty, aromatic layer over the salty butter-soy base.
Korean Soy-Braised King Oyster Mushrooms
Saesongi-beoseot-jorim braises 300 grams of king oyster mushrooms in a soy-based sauce after an initial sear that drives off moisture and firms up the texture. The mushrooms are halved lengthwise, cut into bite-size pieces, and pan-fried in oil for about two minutes until lightly golden before the braising liquid - soy sauce, water, oligosaccharide syrup, and garlic - is poured in. Five minutes of simmering over medium heat reduces the liquid to a sticky glaze that clings to every surface. Sesame oil is drizzled in just before removing from heat, and chopped scallion adds a fresh green contrast. The finished dish stores well, making it a reliable make-ahead side for weekday meals.
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Korean Seasoned King Oyster Mushroom
Saesongi-beoseot-muchim steams 250 grams of king oyster mushrooms, torn into strips along the grain, for six minutes over high heat to preserve their chewy, fibrous texture better than boiling would. After cooling slightly and squeezing out excess moisture, the strips are tossed in a dressing of soy sauce, vinegar, chili flakes, garlic, and sugar. The vinegar provides a tangy lift, while the chili flakes introduce gentle warmth without overwhelming the mushroom's mild flavor. Sesame oil and sesame seeds finish the dish with a nutty aroma. It holds up well when chilled and served cold, making it a convenient banchan to prepare ahead of time.
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