Black pepper
Black pepper, commonly called pepper, was a seasoning often in the preparation of food, it often went alongside salt. 

Starfleet ration packs included pepper as one their condiments. ()

In 2153, Jonathan Archer exchanged several spices from the 's galley, including cayenne pepper, mustard seed, paprika, and black pepper, to B'Rat Ud in exchange for the formula necessary for synthesizing trellium. ()

Pepper was one of the words Miles O'Brien used due to his infection of the aphasia virus. () 

In cooking, pepper was usually added to a recipe in quantities referred to as "to taste." Gideon Seyetik used pepper in his recipe for stew which he cooked for the senior staff of Deep Space 9 in 2370. ()

Appendices

Background information 
The  described black pepper as a "spice made from the fruit of a flowering Earth vine, dried and ground, valued for its sharp, penetrating aroma. In addition to use as a spice, black pepper has in past Earth culture been used as a medication and even as a medium of exchange."

Two salt and pepper shakers, appearing in the mess halls of  and  were sold off on the It's A Wrap! sale and auction on eBay.

External link 
 

de:Pfeffer
Earth herbs and spices