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The season of the porcini mushrooms has long since begun: while the hard-working collectors are already cavorting in the woods and looking for the most beautiful specimens, the others conjure up the most delicious dishes at home. It is particularly important to heat the porcini mushrooms to at least 70 degrees, otherwise, health problems can occur.

Thoroughly heat the porcini

Before the collected porcini mushrooms can be eaten, they should be heated to at least 70°C for two minutes. If this recommendation is not followed, the fox tapeworm eggs can survive. The parasite can cause the rare disease alveolar echinococcosis, one of the most serious liver diseases. The first symptoms are abdominal pain and elevated liver values. Up to 15 years can elapse between infection and diagnosis. Only heating the food to at least 70° degrees, such as when roasting, preserving, or baking, destroys the pathogens sustainably – this also applies to heating porcini mushrooms.

It depends on the number of porcini mushrooms

The lovers of the small forest plants can hardly get enough of them. But in addition to heating the porcini mushrooms, the amount consumed is also important: The German Society for Nutrition (DGE) recommends eating no more than 250 g of wild mushrooms per week. The reason for this is the still high levels of heavy metal and radiation exposure.

That is why porcini mushrooms are healthy

Freshly prepared porcini not only taste great, but they are also healthy. For example, they contain more fiber than apples. The sheltered little ones also have a high content of folate and vitamin D. Figure-conscious people should definitely integrate wild mushrooms into their diet because they are low in calories and fat.

Porcini mushrooms are one of the most popular mushrooms on our menu. Year after year, their full aroma attracts many mushroom pickers to the neighboring forests. Even if such a walk in the forest offers not only full baskets but also relaxation, it would be great if we could also grow the popular porcini mushrooms at home.

Grow porcini mushrooms

The bad news first: while button mushrooms, oyster mushrooms, king oyster mushrooms and many other mushrooms can be grown easily at home or in your own garden, this is unfortunately not yet the case with porcini mushrooms.

Porcini mushrooms belong to the so-called mycorrhiza fungi, i.e. they absolutely need the community of living plants for the development of their fruiting bodies. Without this community, the underground mycelium will grow, but no fruit with the distinctive brown hat will be visible.

Mushroom mycelium and fruiting bodies

What we commonly refer to as a fungus is actually just the aboveground fruiting body of a huge underground network, the mycelium. These cells of the fungal mycelium, which can hardly be seen with the naked eye, extend over long distances like a net in the soil or, in the case of tree fungi, penetrate entire trunks of wood.

In breeding, mushrooms are provided with a suitable growth substrate. This can be soil, wood shavings or even coffee grounds. In mushroom growing kits, this substrate is already inoculated with the appropriate mushroom mycelium.

Mushroom growing in the garden

For mushroom cultivation in the garden, holes are often drilled into old trunks or blocks of wood into which wooden dowels inoculated with mycelium are inserted. Alternatively, in addition to the dowels, a suitable substrate is also supplied in mushroom growing sets, which enables cultivation on or in the ground. For ideal growth you should choose a shady and slightly damp location and then be patient. It can take three to six months for the mycelium to spread.

It’s faster with the mushroom growing sets for the home. Here the first mushrooms can sometimes be harvested after less than two weeks. However, since the breeding ground in the mushroom boxes is limited, this is the end after two to three harvests, while forest mushroom cultures can be expected to produce delicious mushrooms in the following year as well.

Growing porcini mushrooms in the garden

Even if there are no growing kits for porcini mushrooms, it is not ruled out to grow porcini mushrooms in your own garden. However, your garden should be more of a small oak or spruce forest so that there is even a chance of colonizing a porcini mycelium. As with truffle cultivation, you can try to inoculate the soil around living oaks and spruces with unwashed mushroom pieces that still contain enough spores. With a bit of luck and a lot of patience and the right weather conditions, there may be success in the years to come. If you don’t want to wait that long, you can at least console yourself with little namesakes – the stone mushrooms.

Porcini mushrooms cannot be grown commercially, so they are not available fresh all year round. However, if you dry porcini mushrooms, you can preserve them. We’ll show you how.

Drying porcini mushrooms: the right preparation

Before you dry the porcini mushrooms, you should take the following precautions:

Dry the mushrooms as soon as possible after picking. This is the best way to preserve their aromatic taste.
Wet porcini mushrooms are not suitable for drying, as they easily mold. Therefore, only clean the mushrooms with a slightly damp cloth before drying. You can also scrape off dirt with a sharp knife.
Cut out any eaten spots on the porcini mushrooms. The best way to dry porcini mushrooms is to cut them into slices three to five millimeters thick.
Now you can decide, because there are two ways to dry porcini mushrooms without a professional dehydrator: in the air or in the oven.

Air dry porcini mushrooms

Air-drying porcini mushrooms is the easiest and most environmentally friendly option. However, you need the right weather for it. The air drying process only works when the weather is dry and as hot as possible. How to do it:

Thread the porcini slices on a thin thread or spread them out on a baking sheet. The mushroom pieces should not touch each other.
Dry the porcini either in full sun or in the shade. The former speeds up the drying process, but the latter is gentler and better preserves the aroma of the mushrooms.
If the mushroom slices are on a baking sheet, you should turn them several times a day. If you dry the mushrooms outside, you also have to bring them inside in the evening, otherwise they could absorb moisture from the cool night and morning air.
The duration of the drying process varies depending on the weather. The dried porcini mushrooms are ready as soon as they are dry on the inside but can still be bent. They also rustle like dry leaves.

Drying porcini mushrooms in the oven

Drying in the oven requires more energy. Proceed as follows for the drying process in the oven:

Spread the porcini slices on a baking sheet and place in the oven.
Then let the mushrooms dry at a maximum of 50 degrees and circulating air. Important: Hold the oven door ajar with the handle of a wooden spoon so that the moisture in the mushrooms can escape into the oven.
With this drying variant, too, the duration of the drying process varies depending on the performance of the oven.
Tip: If you have a stove with a stone plate, you can also let the porcini mushrooms dry on this plate while the fire burns in the stove. This way you don’t use any additional energy.

Properly store dried porcini mushrooms

You should store dried porcini mushrooms in airtight jars in a dark, dry place.

Stored in this way, dried porcini mushrooms will keep for several years. If they get a slight gray tinge after a while, this is harmless: they are leaked minerals.

If you freeze porcini mushrooms, you can make them last much longer. We explain how it works and what you should consider before buying or collecting the mushrooms.

Freezing porcini mushrooms: You should pay attention to this

If you want to freeze porcini mushrooms, they should be fresh. When you buy porcini mushrooms, an organic seal guarantees you organic cultivation that is free of chemical-synthetic pesticides. With your purchase you can also support regional suppliers, such as the farm or organic market in your area.

If you are looking for porcini mushrooms in the forest, you should note that mushroom picking is strictly forbidden in nature reserves. In other forests you are usually allowed to collect for your own use, but find out about it beforehand.

Freezing porcini mushrooms: this is how you do it

If you want to freeze porcini mushrooms, the mushrooms should be in an unprocessed state if possible. This way you can keep them for up to 12 more months by freezing them. We explain in three steps how to freeze raw porcini mushrooms:

Clean mushrooms: First, carefully clean the porcini mushrooms with a cloth or brush. Don’t wash the mushrooms with water at this point, because that way they will go mushy very quickly.
Cut the mushrooms into small pieces: Use a paring knife to remove the stem ends of the porcini mushrooms. Now cut the mushrooms into small pieces. Halve, quarter or slice the mushrooms.
Freezing: Put the porcini mushrooms in an empty screw-top jar and freeze the mushrooms at around minus eighteen degrees.

To use the porcini mushrooms for various mushroom dishes, you can heat the porcini mushrooms while they are frozen. If you let them thaw for a long time, they lose their firm consistency.

Correct cleaning and preparation is very important, especially with self-collected porcini mushrooms. We show you what you should consider.

Clean porcini mushrooms: This is how it works

Before you can process and prepare porcini mushrooms, you should first clean them. To do this, first wash them carefully under running water. It is best to use your hands and not a vegetable brush, as this will damage the mushroom too much.

Then cut off the wooden end. It doesn’t taste particularly good and is also uncomfortable to chew. If you are using very large porcini mushrooms, you should also remove the spongy tissue under the mushroom head as a precaution, as bugs and dirt can collect in it.

We give you three tips on how to clean fresh porcini mushrooms – and also show you which dishes you can prepare with them.

Porcini mushrooms are among the most popular forest mushrooms. They grow from June to November and are most likely to be found in shady spots under trees such as beech and oak.

Tips for cleaning porcini mushrooms

Porcini mushrooms should be cleaned immediately after collecting or buying them.

Tip 1: Check for vermin when collecting

When collecting the mushrooms, pre-clean them in the forest. That means you should carefully wipe away any dirt with your fingers, cut away broken or pitted areas, and remove bugs. Also check bought mushrooms at home first for damage. Since porcini mushrooms are often attacked by maggots, it is advisable to cut the mushrooms open lengthwise and examine them for such. Maggots mostly eat inside the fungus from bottom to top. Infested areas should be cut away generously, preferably in the forest.

You can continue to work on the mushrooms at home: With very large porcini mushrooms, you should cut away the sponge under the cap, as dirt and insects can hide in it. Even if the sponge is old or a bit muddy, you should remove it. If you pulled the porcini out of the ground with a twisting motion and the lower, earthy end of the mushroom is still there, you should cut that off as well.

Tip 2: Proceed with caution

If you have not already done so, remove the coarse dirt carefully with your fingers. Be careful when doing this, as the surface of mushrooms is very delicate. Helpful utensils for removing dirt are a brush or a small brush. You can use this to carefully clean each individual porcini mushroom. Finally, you can clean the mushrooms with a kitchen towel. Optionally and depending on the degree of soiling, you can (slightly!) moisten it.

Tip 3: Avoid water

Avoid washing the porcini mushrooms with water. They soak up water quickly and lose their flavor. They then release the water when they boil. If specimens are heavily soiled and you cannot get them cleaned with the above steps, you can rinse them in a sieve with cold to lukewarm water. Then pat the mushrooms dry with a cloth.

If you confuse a porcini mushroom with other mushrooms, this is not a problem as there are no poisonous doubles. In this article you will find out which other mushrooms you could confuse the porcini mushroom with.

One of the most popular edible mushrooms is the porcini mushroom, also known as the porcini mushroom. The porcini mushroom belongs to the thick boletus family and lives in root symbiosis with trees. The name spruce boletus, which is common in some places, indicates that the boletus is often found under spruce trees.

There are no poisonous doubles for the porcini mushroom, but it can happen that you confuse it with the common gall boletus and thick-stemmed specimens of the chestnut boletus.

Characteristics of the boletus

The dark brown hat of the porcini can reach a diameter of up to 25 centimeters. The robust, bulbous stem is an average of ten centimeters long and reaches a diameter of two to eight centimeters at the base. In the transition to the cap, the handle is significantly narrower. On the underside of the cap you can see whitish tubes on young porcini mushrooms, which take on a yellow-green color with age.

The porcini has light, firm flesh and tastes pleasantly nutty. Porcini mushrooms do not have a special smell. In older specimens, the pores under the cap are often infested with vermin. Therefore, you should pay attention to this before preparing it in the kitchen and detach the spongy tubes from the cap. The pores hardly change color when pressure is applied.

Boletus mistake: common gall boletus

The common bile boletus belongs to the thick boletus family and is therefore related to the porcini mushroom. Hence the similarities. The common bile boletus is also called bitterling and is not considered an edible mushroom due to its extremely bitter taste. This means that the common bile boletus is not poisonous but inedible.

The most important characteristic, in order not to confuse the common bile boletus with the porcini mushroom, is the color of the pores. The bile boletus has whitish tubes under the brown cap that turn pink with age. The stalk of the bile boletus is slightly darker and veined like a net. The odor of the gallbladder is unpleasant. The flesh has an extremely bitter taste. Therefore, the bile boletus is not popular in the kitchen at all, since a single fungus can spoil the whole dish.

Chestnut boletus vs. porcini

The chestnut boletus also belongs to the thick boletus family and is related to the porcini mushroom. In the vernacular, the chestnut boletus is also called “Marone” because the dark brown hat in the moss looks similar to chestnuts.

The cap of the young chestnut boletus has a hemispherical shape and later becomes irregularly curved. The diameter is up to fifteen centimeters. The whitish tubes, which turn olive yellow when old, are striking and turn blue when pressure is applied. The light flesh also turns blue when you cut the mushroom. This has also earned it the name “blue mushroom”. The stalk, which is shaped like a cylinder, is brownish in color and lighter than the cap and is significantly slimmer than that of the porcini mushroom. The chestnut boletus smells pleasantly slightly sour and is a popular, tasty edible mushroom.

If the pressure point on the tubes and the cutting point on the stem turn blue, it is not a porcini mushroom but a chestnut boletus. You can rule out the additional confusion of the chestnut boletus with the bile boletus by the taste test. Since the chestnut boletus is a tasty edible mushroom, you can harvest it as soon as you have ruled out confusing it with the gall boletus.