Black Powder

An explosive made by mixing various resources. Beware not to put fire on near it!
Overview
Black Powder is an item used in a few trap-related recipes and constructions. It is not a particularly convenient material to rely on, as the traps that consume it are generally awkward to use effectively.
Its price was reduced from 210 Pia to 90 Pia in the General update, making it far less expensive than before. Even so, if you are producing it in your own city, it is worth setting production conditions carefully so that it is not made in excess.
Official description
An explosive made by mixing various resources. Beware not to put fire on near it!