The "rudimentary paste" was a type of food supplement used to sustain RoboCop's organic systems. It could be dispensed from a machine in the Maintenance chamber and placed into paper cups. It is not known how RoboCop actually ingests the paste, the paper cups seem to indicate a simple swallowing procedure. It also unknown what becomes of the waste elements after the paste has been "digested" in his system.
While the maintenance chamber being setup at the Metro West Precinct, Dr. Roosevelt gave Bob Morton and Donald Johnson a brief tour. He dispensed some paste from the machine and handed it Johnson, who sampled it, and remarked that it tasted like "baby food."