Psilocybin Truffles (Sclerotia)

A complete guide to growing, harvesting, and preparing magic truffles — the underground cousin of magic mushrooms.

What Are Magic Truffles?

Magic truffles are not true truffles — they are sclerotia, dense masses of hardened mycelium that certain psilocybin-producing mushroom species form underground as a survival mechanism. While the mushroom fruit body grows above ground, sclerotia form within or beneath the substrate as a nutrient reserve, allowing the organism to survive harsh conditions like drought or cold.

Sclerotia contain the same active compounds as the mushroom fruit bodies — psilocybin, psilocin, and baeocystin — though generally at slightly lower concentrations. They look like small, irregularly shaped nuggets ranging from the size of a pea to a walnut, with a firm, dense texture and a tan to dark brown exterior.

Truffles vs Mushroom Fruit Bodies

Species That Produce Sclerotia

Not all psilocybin mushroom species produce sclerotia. Only a handful are reliable truffle producers. The most commonly cultivated are:

Psilocybe tampanensis

The most popular and reliable truffle producer. Originally discovered in Tampa, Florida in 1977, this species is now the standard for sclerotia cultivation. It produces dense, medium-potency truffles referred to commercially as "Philosopher's Stones."

• Truffle yield: Moderate to high — typically 50–150g fresh per litre jar
• Potency: Moderate — roughly 0.6–1.0% psilocybin by dry weight
• Colonisation time: 8–12 weeks for mature sclerotia
• Difficulty: Easy — very reliable producer
• Notes: The gold standard for beginners. Rarely fruits above ground when grown for sclerotia.

Psilocybe mexicana

One of the most historically significant psychoactive species, used ceremonially in Mesoamerica for centuries. A reliable sclerotia producer with slightly higher potency than tampanensis.

• Truffle yield: Low to moderate — typically 30–100g fresh per litre jar
• Potency: Moderate to high — roughly 0.8–1.2% psilocybin by dry weight
• Colonisation time: 10–14 weeks
• Difficulty: Easy to moderate
• Notes: Smaller individual sclerotia but often reported as producing a warmer, more euphoric experience.

Psilocybe galindoi (ATL #7)

Sometimes classified as a variety of P. mexicana, this species is an excellent and prolific truffle producer. Often sold under the name "ATL #7" or "Mushrocks."

• Truffle yield: High — often 100–200g fresh per litre jar
• Potency: Moderate — similar to tampanensis
• Colonisation time: 8–12 weeks
• Difficulty: Easy — one of the most prolific producers
• Notes: Top choice if you want maximum yield. Very forgiving species.

Psilocybe atlantis

Discovered in Georgia, USA. Produces very dense, dark-coloured sclerotia with above-average potency.

• Truffle yield: Moderate — 50–120g fresh per litre jar
• Potency: Higher than average — roughly 0.8–1.5% psilocybin by dry weight
• Colonisation time: 10–16 weeks
• Difficulty: Moderate — slower coloniser, more sensitive to conditions
• Notes: Worth the extra wait for the higher potency. Sclerotia tend to be darker and harder.

What You Need

Growing truffles requires less equipment than growing mushroom fruit bodies. You do not need a monotub, humidifier, fan, or lighting system. However, stable temperature is critical for 8–16 weeks of incubation, so a heat mat with temperature control is highly recommended — the SH-Room controller is ideal for this (see the controller setup section below).

Equipment

• Wide-mouth glass jars — 500ml to 1 litre mason jars work perfectly. Wide mouth makes harvesting easier.
• Modified lids — jar lids with a self-healing injection port (high-temp silicone or RTV) and a gas exchange filter (micropore tape over a drilled hole, or a synthetic filter disc).
• Pressure cooker — 15 PSI capable, for sterilising grain. A 23-quart model fits 4–6 quart jars.
• Spore syringe or liquid culture — from a sclerotia-producing species (tampanensis, mexicana, galindoi, or atlantis).
• Heat mat + SH-Room controller — for maintaining stable incubation temperature over weeks. The controller's PID control prevents the overshoot that basic thermostats produce.
• Still Air Box (SAB) — a large clear plastic tub with two arm holes, for inoculation. A laminar flow hood works too but is not necessary.
• Isopropyl alcohol (70%) — for surface sterilisation.
• Lighter or alcohol lamp — for flame-sterilising the needle.

Substrate (Grain)

Sclerotia form best on whole grain substrates. The grain provides the nutrients the mycelium needs, and the spaces between grains give room for sclerotia to develop.

Step-by-Step Growing Process

Step 1: Prepare the Grain

1. Rinse your rye berries thoroughly under cold water to remove dust and debris.
2. Soak the grain in water for 12–24 hours. The grain should absorb water and swell noticeably.
3. Simmer the soaked grain for 10–15 minutes until the kernels are soft but not splitting open. You want them hydrated but not mushy — if grains are bursting, they are overcooked and will compact in the jar.
4. Drain the grain thoroughly in a colander. Shake it well and let it air-dry for 15–30 minutes. The surface of each grain should be dry to the touch — excess surface moisture causes bacterial contamination.
5. Fill jars to roughly two-thirds full. Do not pack the grain tightly — sclerotia need space between grains to form. Leave the top third empty for gas exchange.
6. Seal with modified lids — injection port sealed, filter patch in place. Cover the lids loosely with aluminium foil to prevent water dripping into the filter during sterilisation.

Step 2: Sterilise

1. Place jars in the pressure cooker on a trivet or rack (never directly on the bottom — they can crack).
2. Add water to the cooker — about 2–3 inches deep.
3. Bring to 15 PSI and hold for 90 minutes. Do not shortcut this — under-sterilised grain is the number one cause of contamination.
4. Turn off the heat and let the pressure drop naturally. Do not force-cool — rapid cooling can crack jars and suck unfiltered air in through the lids.
5. Let jars cool completely to room temperature before inoculation. This usually takes 8–12 hours. Inoculating warm jars will kill the spores or mycelium.

Step 3: Inoculate

1. Set up your Still Air Box. Wipe the inside with 70% isopropyl alcohol. Let it settle for 10 minutes — you want the air to become still so contaminant particles settle out.
2. Wipe the outside of each jar and the lid with isopropyl alcohol.
3. Shake your spore syringe vigorously for 10–15 seconds to distribute the spores evenly.
4. Flame-sterilise the needle tip until it glows red. Let it cool for a few seconds.
5. Push the needle through the self-healing injection port and inject 1–2ml of spore solution per jar. Aim to distribute drops around the inside edge of the jar rather than one spot in the centre.
6. If using liquid culture instead of spores, inject 1–3ml per jar. Liquid culture colonises significantly faster.

Step 4: Colonise and Wait

This is where truffle growing differs most from mushroom cultivation — there is nothing to do except wait.

1. Place inoculated jars in a dark location at 21–25 °C (70–77 °F). A cupboard, wardrobe, or shelf works perfectly. Avoid direct sunlight and temperature fluctuations.
2. You should see the first signs of mycelium growth within 1–2 weeks — white fuzzy patches spreading from the inoculation points.
3. After 3–4 weeks, the grain should be largely colonised. You may start to see small yellowish or tan lumps forming — these are the beginnings of sclerotia.
4. Do not shake the jars once sclerotia have started forming. Unlike mushroom grain spawn where you break and shake to speed colonisation, shaking disrupts sclerotia formation and can break developing truffles apart.
5. Continue incubating for a total of 8–16 weeks from inoculation. The longer you wait, the larger and denser the sclerotia become. Most growers find 10–12 weeks is the sweet spot between yield and patience.

What to Expect During Colonisation

Signs of Contamination

Since jars stay sealed, contamination is relatively rare if your sterilisation and inoculation technique was clean. Watch for:

• Green, black, or pink patches — mould contamination. Discard the entire jar immediately. Do not open it indoors.
• Foul smell — if you can smell something unpleasant through the filter patch, it is likely bacterial contamination. Discard.
• Slimy, wet-looking grain — bacterial contamination from excess moisture. Discard.
• Yellow/amber liquid — this is usually not contamination. It is mycelium metabolite (mycelium "pee") and is a normal response to stress or dense colonisation. The truffles are still fine.
• Blue bruising on sclerotia — this is oxidation of psilocybin, not mould. It happens when sclerotia are disturbed or pressed against the glass. Completely normal and actually confirms the presence of active compounds.

Harvesting

When to Harvest

Sclerotia can be harvested any time after they have formed, but allowing them to mature for at least 8 weeks from inoculation produces significantly better results. Signs they are ready:

• Individual sclerotia are firm when the jar is gently tilted
• Colour has darkened from pale yellow to tan or brown
• The grain appears largely consumed — the white mycelium mat is dense and thick
• Sclerotia have stopped growing noticeably in size (check weekly by comparing photos)

How to Harvest

1. Open the jar and tip the contents into a clean colander or strainer over a bowl.
2. Break apart the colonised grain cake gently with clean hands. The sclerotia are dense and will separate easily from the loose grain and mycelium.
3. Pick out the sclerotia — they feel like firm, rubbery nuggets. They are obviously different from the soft mycelium and grain.
4. Rinse gently under cool running water to remove loose grain and mycelium. Pat dry with a clean paper towel.
5. Inspect — discard any sclerotia that are soft, slimy, or smell off. Healthy sclerotia should be firm, have a mild earthy/nutty smell, and feel dense.

Expected Yields

Yields vary significantly depending on genetics, grain quality, hydration, incubation time, and temperature. Multiple jars from the same syringe can produce very different amounts.

Storage

Fresh Storage

Fresh sclerotia have a much longer shelf life than fresh mushrooms due to their lower water content and dense structure.

• Refrigerator (2–8 °C) — wrap in dry paper towels inside a paper bag or unsealed container. Fresh truffles keep for 4–8 weeks refrigerated, sometimes up to 3 months. Check weekly for any soft spots or off smells.
• Vacuum sealed + refrigerated — extends fresh storage to 2–3 months reliably. This is how commercial truffle retailers store and ship them.
• Do not store in airtight plastic bags without vacuum sealing — trapped moisture encourages bacterial growth.

Drying

Drying sclerotia takes longer than drying mushroom fruit bodies because of their density. They contain less water by weight (~30% vs ~90% for fresh mushrooms) but the water is trapped inside the dense structure.

• Dehydrator — set to 45–55 °C (113–131 °F). Slice larger sclerotia in half for faster drying. Takes 24–48 hours depending on size and density. They are done when they snap cleanly rather than bend.
• Desiccant — place pre-dried truffles in an airtight container with fresh silica gel packets for final moisture removal. Leave for 24–48 hours.
• Do not oven-dry — oven temperatures are difficult to control at low settings and hot spots will degrade psilocybin. Dehydrators maintain even, gentle airflow.

Long-Term Storage

• Dried + airtight + desiccant — stored in a cool, dark place, dried sclerotia remain potent for 1–2 years or longer.
• Freezer — vacuum-sealed dried sclerotia can be frozen for indefinite storage. Avoid freezing fresh truffles — ice crystals damage the cell structure and create a mushy texture on thawing.
• Honey storage — finely chopped or ground dried sclerotia mixed into honey. The low water activity of honey preserves potency for years. Known as "blue honey" as the psilocybin oxidises and turns the honey a blue-purple colour over time. Use a ratio of roughly 5g dried sclerotia per 100g honey.

Preparation and Consumption

Fresh vs Dried Dosing

Sclerotia are denser than mushroom fruit bodies with less water content, so the fresh-to-dry ratio is different:

Important: Potency varies significantly between species, genetics, and even individual sclerotia from the same jar. Always start with a lower dose, especially with a new batch.

Preparation Methods

Eaten Fresh or Dried

The simplest method. Chew thoroughly on an empty stomach for fastest onset (30–60 minutes). Truffles have a distinctive earthy, slightly sour taste that many people find less pleasant than mushrooms. Chewing well is important as the dense structure needs to be broken down for proper absorption.

Lemon Tek

A popular preparation that may intensify and shorten the experience. The citric acid in lemon juice begins converting psilocybin to psilocin (the compound actually responsible for the psychoactive effects) before ingestion.

1. Finely chop or grind your truffles (fresh or dried).
2. Place in a glass and cover with freshly squeezed lemon or lime juice — enough to fully submerge.
3. Stir and let sit for 15–20 minutes, stirring occasionally.
4. Drink the entire mixture, including the truffle material. You can strain it through a fine mesh if you prefer, but you will lose some potency.
5. Effects typically begin within 15–20 minutes (vs 30–60 minutes eaten raw). The experience tends to be more intense but shorter — roughly 3–4 hours vs 5–6 hours.

Tea

Making truffle tea reduces nausea — a common side effect — while maintaining potency. The heat breaks down the tough chitin in the cell walls that can cause stomach discomfort.

1. Finely chop or grind your truffles.
2. Bring water to a simmer — not a rolling boil. Excessively high temperatures for prolonged periods can degrade psilocybin. Aim for 70–80 °C (160–175 °F).
3. Add the truffle material to the hot water. Add a tea bag (ginger tea is ideal — further reduces nausea) and optionally a squeeze of lemon.
4. Steep for 10–15 minutes, stirring occasionally.
5. Strain through a fine mesh and drink. You can re-steep the leftover material for a weaker second cup.
6. Add honey to taste. The hot water extracts psilocybin efficiently, so you get most of the effects without eating the solid material.

Chocolate Truffles

Masking the taste in chocolate is one of the most popular preparation methods. The fats in chocolate may also help with absorption.

1. Finely grind dried sclerotia into a powder using a coffee grinder or blender.
2. Melt dark chocolate (70%+ cocoa is ideal) gently using a double boiler or in short microwave bursts. Do not overheat — keep below 50 °C (122 °F) to protect potency.
3. Stir the ground truffle powder into the melted chocolate until evenly distributed.
4. Pour into silicone moulds and refrigerate until set.
5. Each chocolate should contain a measured dose. For example, if you use 10g of dried truffle powder across 10 chocolates, each contains approximately 1g dried equivalent.

Capsules (for Microdosing)

The most precise dosing method, ideal for microdosing protocols.

1. Fully dry and grind sclerotia into a fine, consistent powder.
2. Use a milligram scale (0.001g accuracy) to weigh individual doses.
3. Fill size 00 or 0 gelatin or vegetarian capsules. A size 00 capsule holds roughly 0.5–0.7g of ground truffle.
4. A common microdose is 0.2–0.5g dried, taken every 3rd day (Fadiman protocol) or 4 days on / 3 days off (Stamets protocol).
5. Store capsules in an airtight container with desiccant in a cool, dark place.

Optimising Yields

Temperature

Temperature significantly affects sclerotia formation and growth rate:

• 21–25 °C (70–77 °F) — the optimal range. Mycelium grows vigorously and sclerotia form reliably.
• Below 20 °C — colonisation slows dramatically but sclerotia may form denser. Some growers drop to 18 °C after full colonisation to encourage hardening.
• Above 28 °C — risk of bacterial contamination increases sharply. Mycelium may stall or produce less sclerotia.
• Temperature stability is more important than hitting an exact number. Daily fluctuations stress the mycelium and can stall sclerotia development.

Grain Hydration

Getting the moisture content right is critical:

• Too wet — promotes bacterial contamination, grain turns slimy, sclerotia formation is poor.
• Too dry — mycelium grows slowly and sclerotia are small and hard.
• Just right — grains should feel moist but not wet. When you squeeze a handful, no water should drip out, and only one or two grains should stick to your hand.

Jar Fill Level

Fill jars to about two-thirds capacity. Sclerotia primarily form in the lower two-thirds of the jar where oxygen levels are lower. Leaving headspace also allows for gas exchange through the filter patch.

Leave Them Alone

The single most important tip for maximising truffle yield: do not disturb the jars. Every time you pick up, shake, or tilt a jar, you potentially break developing sclerotia and stress the mycelium. Check on them visually without moving them. Do not shake, do not open, do not tap.

Using the SH-Room Controller for Truffle Incubation

While truffles don't need a full monotub setup with humidity, fresh air exchange, or lighting, the one thing they do need is rock-solid temperature stability for 8–16 weeks. This is where the SH-Room controller becomes genuinely useful — especially in rooms with variable heating, during seasonal temperature changes, or in garages and sheds where temperatures fluctuate overnight.

Why Use the Controller?

• PID temperature control — the controller maintains a precise, stable temperature via the heat mat output. PID control prevents the overshoot and oscillation that simple thermostat-based heat mats produce. Your jars stay at exactly 23 °C, not swinging between 20 °C and 27 °C.
• Substrate temperature probe — place the DS18B20 probe between your jars (or taped to the outside of one) to measure the actual temperature of the jars, not just the ambient air. This is far more accurate than an air temperature reading.
• 24-hour temperature logging — the dashboard graphs let you verify that temperature stayed stable overnight and during the day. If you see dips or spikes, you can adjust before it affects sclerotia development.
• Push notifications — receive alerts on your phone if the temperature goes out of range. Catch heating failures or heatwaves early before they damage a 12-week grow.
• Contamination detection — the substrate temperature probe can detect unusual heat spikes that indicate bacterial contamination in a jar, even before visible signs appear.

Recommended Setup

1. Place your jars on a heat mat inside a cardboard box, cupboard, or insulated container. The enclosure helps maintain stable temperature with less energy.
2. Connect the heat mat to the controller's heat mat smart plug output.
3. Position the substrate temperature probe between the jars at jar height — this gives you the actual incubation temperature. Do not place it directly on the heat mat surface.
4. Select any strain profile on the controller, then use Manual Override to set just the temperature target. Set the target to 23 °C (or your preferred incubation temperature).
5. Disable outputs you don't need — turn off mister, fan, and lighting in manual override. You only need the heat mat for truffle incubation.
6. Check the dashboard periodically — the mini trend graph on the temperature card shows you at a glance whether conditions have been stable. Tap it for the full 24-hour chart.

Controller Settings for Truffles

This setup turns the SH-Room controller into a dedicated incubation station. You can run truffle jars on one controller while using a second for your monotub fruiting — or simply reconfigure the same controller between grows.

Troubleshooting

Tips for Success

• Start with P. tampanensis or P. galindoi — they are the most reliable and forgiving species for beginners.
• Use liquid culture over spore syringes if available — colonisation is 2–3x faster, reducing the contamination window.
• Prepare multiple jars — yields vary jar to jar. Running 6–10 jars from a single syringe gives you the best chance of a good overall harvest.
• Be patient — 12 weeks feels like forever, but the difference in yield between an 8-week and 12-week harvest is dramatic. Set a calendar reminder and forget about them.
• Keep detailed notes — record inoculation dates, species, grain type, temperature, and yields. This data is invaluable for optimising future grows.
• Rotate species — try different sclerotia-producing species across batches. Each has its own character in terms of yield, potency, and subjective effects.