De acordo com uma entrevista com Ronald D. Moore referenciado em Memory Alpha , foi feito com CGI.
Q. Ron, I think you may have missed it, but the week we were discussing "Who Mourns For Morn", I asked if the liquid Morn expressed into his glass at the end of the episode was a CGI VFX or if it was accomplished through some sort of on-set rigging.
Ronald Moore: This was a CGI effect.