What is grain spawn?

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Tags

1. #certified
2. #style
3. #mycelium
4. #grain
5. #sterilized
6. #production
7. #industry
8. #spawn
9. #standard
10. #inoculating
11. #ideal
12. #unsterilized
13. #volume
14. #substrates
15. #inoculations
16. #which
17. #totem
18. #grown
19. #organic
20. #commercial
21. #mushroom