Gourmet Mushroom Farming Toolkit
The substrate, yield, and sterilization math a gourmet farm actually runs on — plus build-it-right guides for the lab and grow room. No ads, no signup, nothing leaves your browser. For indoor wood-loving species: oyster, king trumpet, lion's mane, shiitake. Built by a grower and fermentation scientist.
Calculators
Masters Mix Substrate Calculator
Scale a batch of hardwood-sawdust + soy-hull blocks — exact dry weights and the water to hit field capacity, corrected for ingredient moisture.
Biological Efficiency & Yield
Turn block dry weight and species BE into fresh yield per flush — or work backward from a weekly order to the number of blocks you need.
Sterilizer Load & Cycle
How many bags fit a 55–150 gal Bubba-barrel steamer, the cycle time for that load, and how many runs to clear a batch.
Agar & Media Calculator
Grams of agar, malt, and dextrose for the number of plates or slants you're pouring — PDA, MEA, and light-malt recipes.
Fresh-Air Exchange (CO₂)
Fan CFM and air changes to hold your fruiting room at target CO₂ — the fix for leggy, small-capped oysters.
Cost per Pound & Profit
Substrate, spawn, labor, fuel, and contamination loss over yield — your true cost per pound and margin at wholesale or retail.
Guides
Agar Plate Preparation
Pour clean plates start to finish — PDA/MEA recipes, sterilization, sterile technique, transfers, and cleaning up a contaminated culture.
Bubba Barrel Sterilizer
Build and run a 55–150 gal barrel steamer — water level, come-up vs hold time by load, cooling, propane, and steam safety.
Weekly Production Calendar
The repeatable weekly cadence that keeps a small farm in continuous production — mix, sterilize, inoculate, rotate, harvest.
Thor Autobagger
Get consistent, fast fills out of a Thor autobagger — setup, fill weights, block density, throughput, and maintenance.
Species Grow-Parameter Reference
One table per species: substrate, spawn rate, colonization, fruiting temp/RH/CO₂/light, BE, and flush timing.
Contamination ID & Prevention
Spot and stop trich, bacterial blotch, and cobweb before they take a room — ID cues and the habits that prevent them.
Track it across every block and flush?
These tools answer one batch at a time. A done-for-you Farm-Ops tracker logs inoculation, colonization, flush weights, and contamination rate across every room — and flags a batch drifting before you lose the crop.