Add wasabi powder to mini blender and a few tablespoons of hot water to sort of “activate” the wasabi. Let stand and cool for a few.
Add all other ingredients to the small blender and blend until smooth. Adjust flavours how you prefer. Lasts about 7 days.
Note: If not using tamari or salt use 1/3 cup nutritional yeast to make the sauce more rich in flavour and bring the “punch” of wasabi out.