Step 1

Pop the popcorn kernels by the method of your choice. While the popcorn is popping, melt the butter in the microwave, about 25-30 seconds in a small bowl. Whisk in the miso paste until it forms an emulsion (it will become smooth and shiny and will no longer look curdled).

Step 2

Add the miso butter to the popcorn in a large bowl and toss very well to distribute. Sprinkle with furikake or shichimi togarashi if desired.