Culinary Mushrooms Grown in Thailand: Varieties, Kitchen Uses and How They Are Farmed

Yes, mushrooms grow in Thailand, both wild and on farms. The mushrooms most often grown in Thailand are straw mushrooms, grey oyster (phoenix) mushrooms, abalone mushrooms, wood ear, split gill and, in cooler highland areas, shiitake. Farms raise most of them on two main growing substrates: rice straw for straw mushrooms, and sterilized bags of sawdust for oyster-type mushrooms, wood ear and many others. Each mushroom brings something different to a Thai dish. Some add a silky bite to tom yum soup. Others soak up oyster sauce in a stir-fry or add crunch to a salad.

Do mushrooms grow in Thailand?

Mushrooms grow well in Thailand because the country is warm and humid for much of the year, and those are conditions many fungi need. Wild mushrooms appear mainly in the rainy season. Cultivated culinary mushrooms are available all year because mushroom farms control shade, moisture and air.

Wild and farmed mushrooms play different roles in Thai food. Wild mushrooms, such as the prized termite mushroom (het khon), are foraged, sold seasonally and cooked in regional soups and curries. Every year, some foragers are poisoned by toxic species that look like edible ones. Farmed mushrooms are the everyday mushrooms of markets and home kitchens, and they are the focus of this guide.

Which culinary mushrooms are grown in Thailand?

Most Thai names for mushrooms start with het, which means mushroom. The second part of the name usually describes the mushroom's look or smell. Knowing the name helps you recognize each one at the market.

Straw mushroom (het fang)

The straw mushroom (Volvariella volvacea) is the classic Thai cultivated mushroom. It is named after the rice straw it grows on. It is sold as a small egg-shaped knob, roughly the size of a quail egg to a small hen's egg. The outside is smoky grey to dark brown-grey and fades to pale cream at the base. If you cut one lengthwise, you will see a white inner cap and stem wrapped inside an outer skin, like a mushroom still in its egg.

• Texture: The outer layer is slippery and the centre is tender. The bite is soft and slightly springy.
• Aroma and flavor: Mild, gently earthy and a little sweet.
• What it adds: It soaks up hot-sour broth and gives each spoonful a juicy, silky bite. This is why it is the usual mushroom in tom yum goong (hot and sour shrimp soup) and tom kha (coconut galangal soup).
• How it differs: A button mushroom has an open cap and visible gills or stem. A fresh straw mushroom is a closed oval with no visible gills. If it has opened into an umbrella shape, it is past its best stage.

Grey oyster or phoenix mushroom (het nang fa)

The grey oyster mushroom, often sold under the name phoenix mushroom (Pleurotus pulmonarius and related species), is the most common bag-grown mushroom in Thailand. It grows in clusters of thin, fan-shaped caps in pale grey to off-white, with short stems on one side. Nang fa can be translated as "angel" or "heavenly maiden".

• Texture: The caps are tender and the stems are slightly chewy. It becomes silky and soft when stir-fried.
• Aroma and flavor: Mild and faintly sweet, with a light woodland smell.
• What it adds: It works like a sponge for sauces. In pad het nang fa, the mushrooms are stir-fried in a wok with garlic, oyster sauce and sometimes chili, and they turn glossy and savory. It is also torn into strips for mushroom laab, a lime-and-chili minced salad, and battered for crispy fried mushrooms.

Abalone mushroom (het pao hue)

The abalone mushroom (Pleurotus cystidiosus and close relatives) is a thicker, sturdier relative of the oyster mushroom. Pao hue means abalone. The caps are darker grey-brown and more solid, with a firm, meaty chew that some people compare to seafood.

• What it adds: It holds its shape in stir-fries, braises and grilling, where a grey oyster mushroom would turn limp.
• How it differs: Compared with het nang fa, the caps are thicker, heavier and darker, and they grow in smaller clusters or singly.

Wood ear (het hu nu)

Wood ear (Auricularia species) is a thin, ruffled, ear-shaped fungus in dark brown to near black. Hu nu means "mouse ear". It is sold fresh or dried. Dried wood ear looks like brittle dark chips and swells to several times its size when soaked in water.

• Texture: Crunchy and slightly gelatinous, with a pleasant snap.
• Flavor: Almost none of its own. Its job is texture.
• What it adds: Crunch in yum woon sen (glass noodle salad) and in pad khing, a stir-fry with shredded ginger. A pale relative, white jelly fungus, appears in clear sweet soups and desserts.

Split gill mushroom (het khraeng)

The split gill mushroom (Schizophyllum commune) is tiny, fan-shaped and whitish-grey, with a fuzzy top. It is popular in northern and northeastern Thai cooking. It is collected from the wild and also grown in sawdust bags.

• Texture: Tough and chewy, almost rubbery, and it needs thorough cooking.
• Aroma: Distinctly earthy and stronger than oyster mushrooms.
• What it adds: A chewy, savory bite in regional dishes. One example is mushrooms mixed with curry paste, wrapped in banana leaf and grilled or steamed.

Shiitake (het hom)

Shiitake (Lentinula edodes) is called het hom, which means "fragrant mushroom". It needs cooler conditions than most Thai mushrooms, so it is grown mainly in the cooler highlands of northern Thailand, and some is also imported. The cap is chestnut to dark brown, often with pale cracks, and the stem is fibrous.

• Aroma and flavor: Deep, smoky and savory. Dried shiitake are even more intense.
• What it adds: Rich depth in braises such as palo (five-spice stew), in vegetarian stir-fries and in clear soups. The soaking water from dried shiitake can be used as a quick broth.
• Tip: Remove the tough stems or slice them very thin.

Other mushrooms on Thai markets

Enoki (het khem thong, "golden needle") has long, thin white stems with pinhead caps. King oyster (eryngii) has thick, white, meaty stems. Both are common in Thai hot pot (suki) and grilled-meat dinners (mookata). Both need cool, controlled conditions, so much of the supply comes from climate-controlled production or imports, not ordinary village farms. Lingzhi (reishi) is also grown in Thailand, but it is woody and bitter. It is used for tea and health products, not as a culinary mushroom.

How to recognize Thai culinary mushrooms: comparison table

Mushroom (Thai name)	Look	Texture	Main role in a dish	Familiar example
Straw mushroom (het fang)	Small grey-brown egg shape, closed	Silky outside, tender inside	Juicy bite that absorbs broth	Tom yum goong, tom kha
Grey oyster / phoenix (het nang fa)	Thin pale grey fans in clusters	Soft, slightly chewy stems	Soaks up sauces	Stir-fry with oyster sauce, mushroom laab
Abalone mushroom (het pao hue)	Thick, darker grey-brown caps	Firm, meaty	Holds shape when grilled or braised	Stir-fries, grilled skewers
Wood ear (het hu nu)	Thin, dark, ruffled ear shape	Crunchy-gelatinous	Texture, not flavor	Glass noodle salad, ginger stir-fry
Split gill (het khraeng)	Tiny fuzzy whitish fans	Tough, chewy	Earthy chew in regional dishes	Banana-leaf grilled mushrooms
Shiitake (het hom)	Brown cap, often cracked, fibrous stem	Meaty	Deep savory aroma	Palo stew, vegetarian stir-fries
Enoki (het khem thong)	Long thin white stems, tiny caps	Crisp-tender, stringy	Quick-cooking bite	Suki hot pot, grilled in foil

How mushroom farming in Thailand works

Mushroom farming in Thailand grows fungi on agricultural leftovers under shade, high humidity and fresh air. Every farm needs three basics: a growing substrate (the material the mushroom feeds on), mushroom spawn (living mushroom culture, usually grown on grain, which acts like seed), and suitable growing conditions. Most farms use one of two methods: straw beds or sawdust bags.

Straw mushroom beds

Straw mushrooms are grown on rice straw or other plant residues. The fungus prefers high heat, roughly around 30 degrees Celsius, so it suits Thailand's hot climate. It is traditionally grown in outdoor beds or in simple houses covered with plastic. Growers usually follow these steps:

1. Soak the rice straw in water until it is thoroughly wet.
2. Stack the straw in layers or bundles to form a bed, sometimes adding nutrient supplements.
3. Scatter straw mushroom spawn between the layers.
4. Cover the bed with plastic sheeting to hold in heat and moisture.
5. Check the bed and harvest the mushrooms at the closed egg stage, before the outer skin splits. They grow fast, so they must be checked at least daily.

Speed of harvesting matters because a straw mushroom can open into an umbrella within hours. Opened mushrooms are softer and less valued.

Sawdust bag cultivation

Grey oyster, abalone, wood ear and split gill mushrooms are commonly grown in heat-resistant plastic bags filled with sawdust. Rubberwood sawdust, a by-product of Thailand's rubber industry, is a common choice. Thai growers call these bags kon het, or mushroom "logs". The typical process looks like this:

1. Mix sawdust with supplements such as rice bran and a little lime, then add water until the mix is evenly damp.
2. Pack the mix into plastic bags and fit a neck ring and a plug, such as cotton, so air can pass but contaminants cannot.
3. Steam the bags for several hours to kill competing molds and bacteria.
4. Let the bags cool, then add grain spawn through the neck under clean conditions.
5. Store the bags in a dark, quiet room while white mycelium (the root-like body of the fungus) spreads through the sawdust. This takes several weeks.
6. Move the colonized bags to a shaded, humid growing house, open the necks and mist with water so mushrooms form.
7. Harvest whole clusters by twisting or cutting them at the base. One bag usually gives several flushes (harvest waves) before it is used up.

Basic mushroom growing information for Thailand's climate

The key point in mushroom growing information for Thailand is to match the species to the temperature. Heat-tolerant species such as straw mushrooms and phoenix-type oyster mushrooms do well in the lowlands. Shiitake, enoki and similar cool-weather mushrooms need highland locations or cooled rooms.

• Humidity: Growing houses are misted to keep the air moist. Dry air makes caps crack and stops new mushrooms from forming.
• Fresh air: Too little ventilation leads to long, thin stems and small caps.
• Light: Mushrooms do not need sunlight to feed, but dim, indirect light helps oyster-type mushrooms form normal caps.
• Cleanliness: Green or black mold in bags is the most common reason crops fail, so sterilizing and inoculating cleanly matter more than equipment.

How to cook with mushrooms grown in Thailand

Thai cooks treat mushrooms as quick-cooking ingredients. They add them near the end so the mushrooms stay juicy instead of shrinking and toughening.

Simple preparation tips

• Straw mushrooms: Trim the dirty base, rinse quickly and halve lengthwise. Simmer in soup for only a minute or two. They spoil quickly and do not keep well in the cold, so cook them on the day you buy them.
• Grey oyster mushrooms: Tear them into strips by hand instead of slicing, so the edges catch sauce. Stir-fry in a very hot wok so they sear before releasing water.
• Wood ear: Soak dried pieces in warm water until soft, cut away any hard knob, then slice into strips.
• Dried shiitake: Soak until fully soft, squeeze gently and keep the soaking liquid for soups or sauces.
• Split gill: Cook it well, in a stew, curry paste or grilled parcel, because its texture is naturally tough.

Sauces and tools that pair with mushrooms

Each sauce adds something different:

• Oyster sauce is thick, dark and sweet-salty. It coats stir-fried mushrooms in a glossy layer.
• Fish sauce adds sharp saltiness to soups and salads.
• Light soy sauce or Thai seasoning sauce replaces fish sauce in vegetarian cooking.

A wok gives the high, quick heat that keeps mushrooms from stewing in their own liquid. A clay or granite mortar and pestle pounds chili, garlic and lemongrass into pastes for grilled mushroom parcels. It is also used to grind toasted rice powder for mushroom laab.

Substitutes for Thai mushrooms and their limitations

When fresh Thai-grown mushrooms are unavailable, these substitutes work reasonably well, but none is identical:

• Canned straw mushrooms keep the egg shape but are softer and can taste slightly of the can. Rinse them and add them at the last moment.
• Button or cremini mushrooms can replace straw mushrooms in tom yum. They are denser and lack the slippery skin and tender centre.
• Western oyster mushrooms are close relatives of het nang fa and are the best swap for stir-fries and laab. Some are thicker or more strongly flavored.
• King oyster stems cut into thick slices imitate the meaty bite of abalone mushrooms, though their flavor is milder.
• Dried wood ear stores well and is widely sold in Asian groceries, so fresh wood ear is rarely essential.
• Split gill has no close substitute. A chewy mushroom such as shiitake stems or king oyster gives a similar effect, but not the same aroma.

For a first try, buy grey oyster mushrooms and make a simple stir-fry with garlic and oyster sauce. It is an easy way to taste how Thai cooking uses mushrooms.