Battertoast was a Klingon breakfast food made with bread and a yeasty batter.

Klingon Battertoast

Concept of what the green battertoast looks like - basically French Toast sticks, except it is... it is... it is green

In the 2260s decade, the battlecruiser IKS Fire Blossom had battertoast on the food synthesizer menu, although the equipment occasionally got confused and delivered the meal in a bright green color that was unnatural for the dish. Captain Kaden theorized that the laundry recycler could have been involved, since the green matched the shade of standard issue Klingon military undergarments, a theory that Askade dismissed as unlikely. (TOS - Worlds Apart novel: How Much for Just the Planet?)