Chestnut Mushroom Liquid Culture Syringe (10cc)

About Chestnut Mushroom

The Chestnut Mushroom (Agrocybe aegerita) is a gourmet favorite known for its rich, nutty flavor and attractive chestnut-brown caps that fade to cream at the margins. This species fruits in dense clusters on supplemented sawdust and is one of the more rewarding intermediate-level mushrooms to grow indoors. It offers a flavor complexity that's hard to find in common grocery mushrooms, making it a standout for home cultivators who cook.

Culinary Uses

Chestnut Mushrooms deliver a deep, nutty, slightly sweet flavor that shines in soups, risottos, and sautés. The caps hold their shape well during cooking and develop a pleasant umami depth when browned in butter or olive oil. Pairs beautifully with thyme, garlic, and hard cheeses — try them over polenta or folded into pasta for a restaurant-quality dish at home.

Growing Notes

• Difficulty: Intermediate
• Preferred substrate: Supplemented hardwood sawdust (with wheat bran or soy hulls)
• Fruiting temperature: 60–75°F (16–24°C)
• Colonization speed: Fast
• Special considerations: Chestnut Mushrooms fruit readily in dense bouquets and benefit from a light casing layer. Provide moderate fresh air exchange and high humidity (90%+) during pin formation. Harvest before caps flatten fully for the best texture and shelf life.

Usage Instructions

• Sanitize your work area, tools, and contact surfaces before handling.
• Prepare grain, substrate, agar, or grow kits according to your standard operating procedures.
• Introduce the liquid culture using sterile or near-sterile technique (e.g., in front of a flow hood or still-air box when applicable).
• Maintain species-appropriate incubation and fruiting conditions for temperature, humidity, and fresh air exchange.

Shelf Life & Storage

Store refrigerated at 34–39°F (1–4°C) away from direct sunlight. Under proper storage, typical shelf life is 3–6 months unopened. Always visually inspect for contamination, damage, or off-odors before use.

Quality & COA

Each batch is prepared using standardized procedures and test-inoculated on appropriate media before release. These internal checks act as our in-house Certificate of Analysis (COA) to confirm viability and cleanliness at the time of packaging.

Strain Profile

• Common name: Chestnut Mushroom
• Scientific name: Agrocybe aegerita
• Strain: Isolated culture
• Difficulty: Intermediate
• Preferred substrate: Supplemented hardwood sawdust blocks
• Use case: Gourmet cooking, indoor cluster fruiting, home cultivation

How to Use This Liquid Culture

1. Sterilize the injection port on your grain bag with an alcohol prep pad.
2. Shake the syringe vigorously for 10-15 seconds to disperse the mycelium evenly.
3. Inject 1-2cc of liquid culture through the self-healing injection port of your grain bag. Less is more — 1cc is usually plenty.
4. Seal and incubate the bag at 70-75°F in a clean, dark space.
5. Wait for colonization — white mycelium will begin spreading through the grain within 2-4 weeks.

Temperature & Timeline: Colonization typically takes 2-4 weeks at 70-75°F. Warmer is not better — temperatures above 80°F increase contamination risk.

Signs of Success: You'll see white, fluffy mycelium spreading outward from injection points. The grain will become covered in a uniform white coating when fully colonized.

Next Steps: Once the grain is fully colonized, transfer it to a bulk substrate or introduce fruiting conditions, depending on your setup.

Common Mistake: Injecting too much liquid culture does not speed up colonization — it wastes culture and can introduce excess moisture that encourages contamination. Stick to 1-2cc per bag.

What's in the Box

• 1x 10cc liquid culture syringe
• 1x sterile needle
• 1x alcohol prep pad