The Golden Oyster (Pleurotus citrinopileatus), also called lime oyster, is a species of mushroom from the family of Oyster relatives. The fruiting bodies have white stems and yellow caps and grow in clusters. The species is a popular edible mushroom, especially in Asia. Lemon yellow seitling is a wood decomposer that cometabolically breaks down lignin, causing white rot. The German names were introduced by growers only in recent times.

The groove-stalked seitling can change its way of life from parasitic to saprobiontic and is therefore easy to cultivate. This yellow variety, which actually only grows wild in the Far East and Africa, can be hybridized (colloquially: crossed) with European lines and has therefore lost its status as an independent species.

Grown in tropical areas as a substitute for oyster mushrooms because it tolerates heat well. Grows on a wide range of substrates.

Pleurotus citrinopileatus cannot quite match oyster mushrooms in taste and texture, but the speed, high yield, and bright yellow color make this fact fade into the background.

The mushroom is traditionally grown in East Asia and more recently in Taiwan, the USA and Europe. Besides its value as an edible mushroom, which is reflected in numerous dishes, Pleurotus citrinopileatus is also important as a supplier of medicinal substances, which is used in the treatment of emphysema. Suitable substrates are copper beech, ash, alder, poplar, willow and maple.

Pleurotus citrinopileatus thrives well at moderate room temperatures and really “shoots” at higher values. Also copes well on over-scalded straw pellets and other simple substrates. Best quality is achieved with sterile substrate on hardwood base and grain, highest yields are achieved on bean straw. Stem crops on hardwoods are also possible. Although obviously heat-loving, stem crops survive even freezing winter periods.

Like all swarm fruiting members of the Pleurotus family, the lime oyster benefits from a few lateral fruiting openings in the substrate container.

From these few spots, cauliflower-like precursors form first, still covered by a delicate skin. Often, remnants of this gossamer coating, which does not otherwise occur in other species of seitlings, are mistaken for mold. In the second picture, magnification reveals what is meant.

1. Dissolve the malt extract and agar in distilled water.
2.  Sterilize the solution by autoclaving at 121°C for 15-20 minutes.
3. Pour the sterilized media into petri dishes or other containers under sterile conditions.
4. The Yeast is optional, but you can add it to any recipe for nutritions, same for Peptone.

Rye, wheat, sorghum, milo or millet. Every part of the coffee plant can be recycled by growing oyster mushrooms. Cottonseed hulls, chopped corn cobs, and hardwood sawdust. Alternative substrates that are being commercially developed are sugarcane bagasse, paper by-products, banana leaves, and peanut shells.

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After the second flush, relatively few mushrooms form. Biological Efficiency: 25-75% indoors with wheat straw. Yield efficiencies are higher on cotton seed modified substrates.

Pleurotus citrinopileatus usually grow in large clusters arising from a single attached base. Bunches are often made up of fifty to a hundred or more mushrooms. As strains of this species age, the yellow cap color loses and turns beige, and fewer fungi are produced in each primordial group.

As a saprobiont, the Golden Oyster Mushroom attacks dead or injured wood of deciduous trees, where it breaks down the lignin component, causing white rot. Natural substrates are the wood of elms and beeches. It is found in riparian forests and along riverbanks and requires comparatively high temperatures (21-29 °C) to grow, so it does not form fruiting bodies below 16-18 °C, but is very tolerant in the upper temperature range. When fruiting, the relative humidity of the air should be above 80% for the Lemon Toadstool.

Pleurotus citrinopileatus is found in Russia, Africa, as well as in Asia.

A saprophyte of Asian hardwoods, especially oak, elm, beech, and poplar

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Pleurotus citrinopileatus remind a little of cashew nuts in taste. They are good to be fried very hot in a pan or wok, you'd better not boil the mushroom. Unfortunately, the color is lost during preparation. With fully ripe specimens they better cut away the stalk, unless they like a little "bite".