Here’s a full recipe for homemade mushroom powder—a flavorful, umami-rich seasoning you can use in soups, sauces, rubs, or even sprinkled over eggs and popcorn.

Homemade Mushroom Powder Recipe

Ingredients:

250g (about 8 oz) dried mushrooms (shiitake, porcini, oyster, cremini, or a mix)

Optional:

1 tsp sea salt (for seasoning)

1 tsp garlic powder

1/2 tsp black pepper

1/2 tsp dried thyme or rosemary (for a herbed version)

Instructions:

Dry the Mushrooms (if using fresh):

Clean mushrooms with a brush or damp cloth—do not soak.

Slice thinly and arrange on a baking sheet or dehydrator tray.

Dry in a dehydrator at 45–50°C (113–122°F) for 6–10 hours, or in the oven at the lowest temp (ideally under 80°C/175°F) for 4–6 hours, flipping halfway.

Mushrooms must be crispy and completely dry before grinding.

Cool Completely:

Let dried mushrooms cool to room temperature before grinding to avoid clumping from steam.

Grind into Powder:

Use a high-speed blender, spice grinder, or coffee grinder.

Pulse in small batches until fine. Sift if desired and regrind coarse bits.

Season (Optional):

Mix in salt, garlic powder, pepper, or herbs if you’re making a savory blend.

Store:

Store in an airtight jar or spice container in a cool, dark place.

Best used within 6 months for optimal flavor.

Tips:

Best mushrooms: Shiitake and porcini offer the richest umami flavor.

Uses: Add to gravies, stews, scrambled eggs, ramen broth, risotto, or meat rubs.