He requested a shipment of prime Mexican red chili peppers from Starfleet, who shipped the cargo onboard the USS Enterprise. Captain James T. Kirk handpicked the peppers himself to ensure their quality.
When the Enterprise was delayed at M-113, Dominguez sent a message requesting an explanation and reminding Captain Kirk that his ship was carrying urgently needed supplies. Kirk told Nyota Uhura to assure Dominguez that the peppers were en route, joking that Dominguez wouldn't die without them for a few more days. (TOS: "The Man Trap")