My brother and I got into a discussion about drug use in the Germany army during ww2, my brother brought up Scho-Ka-Kola, and how it contained essentially cocaine, however i cannot find much information of this, outside of YouTube comments on some guy unwittingly trying German rations, including Scho-Ka-Kola, and can only find that there is caffeine within Scho-Ka-Kola, however i feel like this is referencing modern Scho-Ka-Kola. Is the idea that the Scho-Ka-Kola issued with werhmacht rations contained cocaine or Pervitin or some other related drug, true?