In "Waltz"[DSN6], there's one aspect of that most excellent episode that has always seemed odd to me. Sisko and Dukat are stranded on a planet with only the emergency supply rations from a shuttle to sustain them. While eating some of Dukat's cooking, Sisko notes that it needs pepper. So, he adds some from what appears to be a shaker.
A pepper shaker?
Salt as a part of an emergency supply kit I can understand. Even sugar has its uses. But pepper simply is not a necessary part of the diet. Sure, I'm all about some pepper, but let's be realistic here.
Black pepper is simply the ground bits of the peppercorn plant. Although it has been a prized spice on Earth for millenia (even used as currency at times), that doesn't justify its inclusion in an emergency supply kit. Even if we assumed that it was included because of piperine (the relevant chemical of pepper, reportedly useful for lowering metabolism), there would surely be more efficient ways to store and deliver it to the species who would be properly affected by it than via ground peppercorn in a dedicated shaker.
(Of course this touches on the fact that everyone seems to be able to eat everyone else's culinary delights in Trek without being poisoned, but that's a rant for another time.)