Skosh
Skosh is a magic substance found only in one hidden pool on the tableland of the Yips, which made the frog that fed on it grow huge and unusually intelligent.
First named in The Lost Princess of Oz, ch. 3
feeding on the magic skosh which is found nowhere else on earth except in that one pool.
What the books say it is
region found only in one enchanted pool 1 chapter
Now that pool, it seems, was unknown to the Yips because it was surrounded by thick bushes and was not near to any dwelling, and it proved to be an enchanted pool, for the frog grew very fast and very big, feeding on the magic skosh which is found nowhere else on earth except in that one pool.
The Lost Princess of Oz, ch. 3
trait magic 1 chapter
Now that pool, it seems, was unknown to the Yips because it was surrounded by thick bushes and was not near to any dwelling, and it proved to be an enchanted pool, for the frog grew very fast and very big, feeding on the magic skosh which is found nowhere else on earth except in that one pool.
The Lost Princess of Oz, ch. 3