Please be sure to read your pressure canner’s instructions and familiarize yourself with its safety features BEFORE trying this step. If you use watercolors for this step I recommend you seal them in the end with varnish or regular hair spray. Finally, not sure what you mean by the sandwich technique with spores, but generally spores are added to the dish after it has cooled and solidified and often takes a number of transfers before you arrive at a pure culture.

To increase your changes of growing mushrooms rather than mold, I recommend using a semi-sterile process for transfer. I would put the soaked substrate drip dried into the jars, drill a quarter inch hole and stuff with poly stuffing before screwing on the top. Many different types of grains can be used for spawn – including wheat, rye, brown rice, white rice, wild bird seed and even popcorn.

Then fold it back on itself and back on itself again, do this until it is a thick web of polyfill but not overly ‘tight’. We have combined special organic brown rice flour with vermiculite, mineral water, Liquid worm castings and Bee pollen to create the Ultimate mushroom growing jars! Others will put grain in jars to grow out their mycelium and later transfer to wood or straw for mushroom fruiting. Crafted with utmost care and precision, e ach piece is fashioned from glass to ensure an aesthetic appeal that stands the test of time. Over the next week or so, the mushroom mycelium will work its way through the grain, eagerly devouring the nutrition and moisture held within the grains.

The main reason I use the half-gallon size is that they hold more substrate than smaller jars, allowing for a larger harvest.You can also inoculate the grain jar without even opening the lid, by simply injecting the liquid culture right though the filter on the top of the jar. Its versatile design makes this the perfect plastic container for creams, powders, balms, glitter and gels. It is possible that the filter discs stayed wet and had some form of nutrition on them- a perfect environment for mold.

Should I allow the sterilization any longer, or is it normal for those to be partially digested in between batches ?If you forget and a layer of residue has formed—Here's our secret: Pour in half a teaspoon (approximately) of Hydrogen Peroxide and let it rest in their with the plants for 24 hours. This will prevent water from the pressure cooker from spilling into your grain and changing the moisture content of the jar. div%3E%3Cdiv%20class%3D%22title_and_year%22%3E%3Cspan%20class%3D%22title_and_year_title%22%3ELidded%20Mushroom%20Jar%3C/span%3E%3C/div%3E%3Cdiv%20class%3D%22medium%22%3EPorcelain%3C/div%3E%3Cdiv%20class%3D%22dimensions%22%3E11. Then take your mushroom culture (from your petri dish clones or homemade/purchased grain spawn) and place it closer to you.