Figured I'd outline my process as it's quick and dirty.
I use Tupperware's the smaller and closer to petri sized the better. If you don't make filters and leave them unmodified I'm pretty sure you don't even need foil. The foil is a redundancy and makes me feel more sterile as the plates sit in my lab.
The standard recipe
- 500ml Water
- 10g malt extract (light or whatever is cheapest)
- 10g agar
- 500mL water
- 8g malt
- 8g agar
Standard is too stiff for my fumbling. I prefer less agar to make it more adhesive. Lower nutrients saves me money and some claim gives better chance at rhizomorphic growth.
Lately I prefer using left over boiled grain water diluted by eye. Additives to consider are wood, manure, compost, charcoal, food dyes, gypsum, coffee, and anything else mushrooms enjoy.
Learn the standard or modified then use your eyes to keep the color in check. Remove agar and you got LC.
Make near boiling water and add your dry ingredients. Stir till mostly dissolved, PC will take care of rest. If you are a clean freak use an immersion blender and strainer/coffee filter to remove non-dissolvable materials.
Wrap lids in foil.
Load PC and vent for 10 minutes, bring to pressure and cook for 40mins.
After full cycle, shut off heat, once gauge is at 0, weight dropped, open lid, swirl plates, and stack as they allow. If condensation is an issue try a hot cup on top.
You may have better luck waiting till PC is cooled so it is easier to handle. I just prefer to swirl and dissolve and stack.
Please ask for clarifications.