Remove the moisture from the tofu and mash it.
Mix mugwort powder, cocoa powder, egg, olive oil, and erythritol evenly with the tofu.
Sift in the flour and baking powder, then mix together.
Pour the batter into a pound cake mold.
Bake in a preheated oven at 180 degrees Celsius for 25 minutes.
Let it cool and cut into desired pieces.