The Masters Mix Substrate consists of Hardwood pellets (a mix of Oak, Maple, and Walnut) and Certified Organic Soy Pellets, which both provide mushroom mycelium with essential nutrients, and have excellent hydration capacity.

This blend of ingredients (hardwood pellets and soy pellets) is one of the most commonly used substrates in the commercial gourmet mushroom growing world. Masters Mix makes it exceptionally easy to create your own mushroom fruiting block, by simply adding water to the pre-mixed bag, pressure cooking, and mixing with spawn.

This fruiting substrate can be mixed with colonized spawn (like one of our spawn cultures) to form a medium that contains the nutrients and water-retention capacity necessary to produce multiple flushes of large fruiting bodies. You can expect to yield between 1 and 2 pounds of mushroom (Oyster, Lions Mane, etc) by mixing one of our Mushroom Spawn Jars with a whole bag of Masters Mix Substrate.

This product is sold in a Type 14A 0.5 micron filter patch, autoclavable, Unicorn Brand mushroom grow bag.

THIS IS NOT A PRE-PASTEURIZED/STERILIZED MEDIUM.

THIS MEDIUM SHOULD ONLY BE USED FOR NON-ACTIVE SPECIES.

YOU WILL HAVE TO HYDRATE AND PASTEURIZE/STERILIZE THIS MEDIUM YOURSELF.

INGREDIENTS

Canadian Hardwood Pellets (Oak, Maple, and Walnut)

100% Organic Canadian Soy Pellets

Total Weight - 1.0kg

INSTRUCTIONS

Add 1400mL of water to the Masters Mix Substrate bag, and mix well.

Allow mixture to soak for 1/2 hour.

Pasteurize in a conventional oven @180 Degrees Fahrenheit for 6 hours, OR Sterilize at 15PSI/265F for 90 minutes.

Let cool (approximately 4-6 hours) and mix with colonized mushroom spaw. Incubate for 7-10 days. See out tutorials for more in-depth instructions!