The article Concentrated Taint is still unfinished and may be lacking detailed general information, screenshots, and crafting recipes. Please expand the article and remove the {{unfinished}} tag once the article can be considered complete.
Concentrated Taint contains information about the ThaumCraft mod.
This foul liquid must be handled with great care. Dropping it will cause taint to spread in the area. Fortunately it does no lasting harm to the local aura unless you soak the area in it. Why would you do that?