How to Make Masters Mix: The Best Substrate for Growing Mushrooms

Written By Guilherme Maia

Are you looking to supercharge your mushroom-growing success? Masters Mix is one of the best substrates you can use for gourmet mushrooms like oyster mushrooms. It's a simple blend of 50% hardwood sawdust and 50% soybean hulls, offering a perfect balance of nutrients.

Why Use Masters Mix?

Masters Mix is widely used because it:

  • Boosts mushroom yields significantly.

  • Speeds up colonization due to easy breakdown.

  • Works well for commercial and home growers.

How to Make Masters Mix at Home

To make this high-performance mushroom substrate, follow these simple steps:

Ingredients:

  • 50% Hardwood Sawdust Pellets

  • 50% Soybean Hull Pellets

  • Water for hydration

Instructions:

  1. Measure Ingredients: Mix a 1:1 ratio of soybean hulls and hardwood sawdust by weight.

  2. Hydrate: Add water to reach 60-65% moisture content.

  3. Fill Grow Bags: Use filter patch bags for best results.

  4. Sterilize: Pressure cook at 15 PSI for 2-2.5 hours.

  5. Cool & Inoculate: Let the substrate cool before adding grain spawn.

  6. Incubate & Fruiting: Allow mycelium to colonize, then introduce fresh air and humidity.

Get Started with Liquid Mushrooms

Ready to grow your own mushrooms? Get it from here: Master’s Mix

Guilherme Maia
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