Gather all your ingredients on the counter.

Measure out 2 tablespoons of dried shiitake mushrooms.

Using a spice grinder or blender, pulse the dried mushrooms until finely ground.

In a mixing bowl, combine the ground mushrooms with sea salt, garlic powder, onion powder, smoked paprika, black pepper, and nutritional yeast.

Use a whisk or spoon to mix all the ingredients until they are evenly combined.

Taste and adjust the seasoning based on your preference.

Transfer the seasoning into an airtight container.

Store your umami seasoning in a cool, dry place.