Free Calculator
Liquid Culture Recipe Calculator
Calculate exact recipes for honey water, dextrose, potato dextrose, and custom liquid culture media. Adjust jar size, batch quantity, and nutrient concentration.
Your Honey Water Recipe
1 jar × 200ml = 200ml total
Measuring honey? 1.1 tsp or 0.4 tbsp
Quick Steps
- Mix light honey into water until dissolved
- Pour into jar(s) — leave 20% headspace for gas exchange
- Add magnetic stir bar (optional but recommended)
- Cap with synthetic filter + injection port
- Pressure cook at 15 PSI for 20-30 minutes
- Cool to room temperature before inoculating
Use light, filtered honey — not raw or unfiltered. Raw honey can carry wild yeasts that compete with mycelium. 4% concentration is standard. Nature Lion's pre-filled LC jars use this recipe.
Skip the prep work?
Shop Pre-Filled Liquid Culture Jars →How to Make Liquid Culture for Mushrooms
Liquid culture (LC) is a nutrient-rich broth used to propagate mushroom mycelium. A small piece of tissue, agar culture, or spore syringe is added to the sterile broth, and the mycelium colonizes the liquid over 1-3 weeks. The resulting culture can then be used to inoculate grain spawn, substrate bags, or additional liquid culture jars.
Honey water is the most popular liquid culture recipe for home growers. Light honey (not raw or unfiltered) is dissolved in water at a ratio of 3-4% by weight. The solution is sterilized in a pressure cooker at 15 PSI for 20-30 minutes, then cooled and inoculated.
Dextrose (corn sugar) is preferred by commercial growers because it produces a clearer broth that makes contamination easier to detect. The standard concentration is 3-4% by weight.
Potato dextrose brothadds extra nutrients from potato starch, supporting faster mycelium growth for some species. It's commonly used for more demanding species like lion's mane and reishi.
For best results, use jars with self-healing injection ports and synthetic filter caps for gas exchange. This allows you to inoculate and draw culture without opening the jar, minimizing contamination risk.
Ready-made liquid culture jars save the preparation work. Our 200ml commercial liquid culture jars come pre-filled with sterile honey-water medium, self-healing injection port, and filter cap — ready to inoculate.