Bring rice under a canopy, crush it with your brush, and sweep the white powder in your mouth... it's sugar now! You make sugar by carefully crushing rice to a powder, until it's small enough to brush into your mouth.
You learned how to make sugar in とうきょう. You found a special とうきょう sugar sensei and they introduced you to all of the secret methods you know now.
Currently there are no similar looking kanji which exist in the WaniKani learning system