Bacon
From Memory Alpha, the free Star Trek reference
Bacon is smoked and salted meat from the back and hindquarters of an Earth pig, often eaten as part of breakfast as a side with eggs.
In 2151 Doctor Phlox listed bacon as one of Malcolm Reed's favorite foods alongside sausage, Eggs, and pancakes. (ENT: "Silent Enemy")
Miles O'Brien often enjoyed bacon and eggs for his breakfast. (TNG: "The Wounded")
Rom ordered bacon and eggs with a side of corned beef hash at Quark's before reporting for his duty shift in 2373. He later found out it didn't agree with his stomach, though. (DS9: "The Assignment")
