A photo of a round loaf of bread divided into 8 slices. It has a greenish tint and looks hard to the touch. There is a stamp on it, too.
https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/109/587/146/646/643/417/original/3d8a5b88f9f877c0.jpg