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The classic grain for mushroom spawn.
USDA Certified Organic, triple-cleaned whole rye berries for making your own grain spawn, in a 40 lb bag. Rye is the classic spawn grain: it hydrates evenly, holds moisture without going mushy when prepared right, and gives mycelium plenty of nutrition for fast, even colonization in jars and bags.
Takes on water evenly without pooling in the jar or bag.
Carbohydrates, protein and bran carry mycelium from inoculation to full colonization.
Oyster, lion's mane, shiitake, reishi and most gourmet species colonize rye well.
Triple-cleaned, so there is less dust to rinse out.
Rinse the rye until the water runs mostly clear, soak overnight, then simmer briefly. Stop before kernels split.
Drain and spread the grain out until the outside of each kernel looks dry.
Load filter-patch bags or jars and pressure sterilize at 15 PSI: about 2.5 hours for quarts and 1-3 lb bags, up to 3-3.5 hours for bigger loads.
Let it cool fully, ideally 12-24 hours, then inoculate with sterile technique.
Grain spawn must be sterilized, not just pasteurized. Start timing once the load is actually up to temperature. Most gourmet species colonize best at 75-82°F.
Short on time?Skip the prep with sterilized grain spawn bags or colonized grain spawn. Inoculate with our liquid culture syringes.
Yes. Grain spawn needs full sterilization at 15 PSI. Boiling or pasteurizing is not enough.
About 2.5 hours at 15 PSI for quart jars and 1-3 lb bags, and up to 3-3.5 hours for larger loads.
It was overcooked or too wet. Simmer briefly, stop before kernels split, and dry the surface before loading.
The evening I received these rye berries I started 16 jars and 3 bags. Was sent a 10 day later email inquiring on some reviews. The liquid culture is had on hand seem to really be eating it up.
Very clean and work geat for my grows...
Using to make bread.
The bulk grains that they sell are of great quality, they are very plump and clean. A+++ quailty
Good product very little foreign matter overall consistently clean and uniform.
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