Crack resembles small, off-white, crystalline rocks. But, how is crack cocaine cooked? And, why modify cocaine in this way? What Is Crack Cocaine?Ĭrack cocaine is a modified, freebase form of the stimulant drug cocaine hydrochloride (or powder cocaine). Modifying or cooking cocaine changes the physical properties of the drug, creating crack in the process. Secular Organizations For Sobriety (SOS).Eye Movement Desensitization & Reprocessing (EMDR).10 Tips For Preventing Teen Substance Abuse.