No need for flour. Just whipping the egg makes the cake so fluffy and moist. Enjoy it when delicious sweet potatoes are in season.
I prefer fluffy cakes to heavy ones, so I experimented and arrived at this recipe.
Please be careful not to mix too much when you are mixing the sweet potato mixture and egg mixture.When you eat it the next day, it will be even more moist and delicious.
Enjoy Japanese food around the world.