Koenig was hired to write the script after some of his work was passed from Susan Sackett to series creator Gene Roddenberry. Koenig found the writing process for the episode unenjoyable, due to the number of re-writes required. Further additions were made by Roddenberry, including talking vegetables as characters. When the producers offered him a second episode, Koenig turned it down. "The Infinite Vulcan" received a mixed reception from critics, who suggested that the writing could have been better, but others included it in lists of the best episodes of "The Animated Series".