A jar of Clabbert pustules

A Clabbert pustule was an adaptive feature of the Clabbert.[1] Located on the forehead, this pustule flashed red whenever the creature sensed danger, leading wizards and witches to keep Clabberts on their property to warn them of approaching Muggles.[1]

Clabbert pustules were used as an ingredient in potions. An unknown quantity cost ten sickles at an apothecary in Diagon Alley.[2]


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