I'm subtitling it, and that's what I found. The theme ingredient was conger eel. Though it was normal length when they used it again in the August 16, 1996, June 6, 1997, and August 13, 1999 episodes.

Same thing with how anglerfish was 75 minutes when it was first used on November 4, 1994, but normal length when it was used again on the November 22, 1996 (as frogfish) and March 26, 1999 episodes.