A white substance that can be mashed to look, in form, similar to powder cocaine. Although not actual cocaine, it is used in the process of cutting cocaine to make the initial amount appear larger. Anticoke can be anything, from aspirin or sugar to another drug like ecstasy. The term is derived from the word "anti-matter" from particle physics and quantum chemistry meaning a particle that is effectively opposite to another particle labeled as "matter."
"Try this blow that John gave me"
"This stuff is terrible, it must have so much anticoke in it, it doesn't even taste like blow."