What do you call bread that looks like a brick?
- A loaf of bread?
- A brick of bread?
Or some other way?
loaves of bread
It is not easy to have a bread loaf form in the true shape of a brick since the top is not naturally flat.
In your example, bread in that form are mini-loaves since they are cut from a bigger production loaf
which is easily done with German pumpernickel which is notoriously dense and heavy.
I would say a loaf of bread, or if you had the space, a loaf of bread that looked like a brick. Saying some bread is a brick in English implies it is "like a brick" in density.
I would go with 'slab' as mentioned by @1006a
a thick plate or slice (as of stone, wood, or bread):
Examples of slab in a Sentence
a thick slab of homemade bread
If you zoom in on the image (and can read German) you will see that it does not show a solid mass of bread:
Die Packung enthält 7 Scheiben zu je ca. 72 g.
So it is not a bread, or brick, or loaf, or slab at all. It is simply 7 slices of bread packaged together.
To me (USA, first language) saying a brick of bread, while perhaps uncommon usage, would indiciate more specifically the rectangular prism shape that you see. If someone told me they had a brick of bread, I would also wonder as to whether or not the bread was stale or hard, like a brick.
This is not a loaf, because it is not the entire unit that was baked in one go.
Brick of bread is not an expression generally used in English, at least not in any dialect with which I am familiar.
This is a pack (or packet, preference may depend on dialect) of bread containing 7 slices cut from a larger loaf.