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Grain spawn

Barley Grain Spawn for Shiitake

A nutrient-rich barley grain spawn recipe commonly used for shiitake and other wood-loving cultivars. Provides dense mycelium for strong colonization.

Intermediate16 days

What ingredients does it use?

What ingredients does it use?MetricImperial
Barley1000 g2.2 lbs
Water1600 ml54.1 fl_oz
Gypsum10 g0.35 oz
Lime5 g0.17 oz

Recipe details

Type
Grain spawn
Difficulty
Intermediate
Sterilization
Pressure cooker · 110 min
Container
1L Glass Jars
Expected yield
10 jars of barley spawn
Cycle length
16 days

How do I prepare it?

Soak, simmer, drain, and sterilize barley before inoculation.

  1. Rinse barley thoroughly to remove dust.
  2. Soak for 12 hours in cool water.
  3. Simmer in fresh water for 10 minutes.
  4. Drain and steam dry for 20 minutes.
  5. Mix gypsum and lime thoroughly.
  6. Load into jars and sterilize for 110 minutes.
  7. Cool before inoculation.

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