What's this (cooking related)?
Is it a naan bread flattener?
No - but coincidentally it does have something to do with bread.
No - but it is sharp. Very sharp.
Right, so the sharp piece is protected inside the "box". Therefore you must have to push whatever you are cutting through the rectangular orifice. And whatever you are cutting is likely to be rectangular.
It's a device for cutting toast soldiers?
Garlic crusher?
For making garlic breadNo - its something you (can) use when making bread... its very sharp!
For making garlic bread
Making bread? My next guess was going to be a butter curler but they are not sharp.
Hum. Sharp thing with a curved, angled or shaped blade/s (so to require the box). To make bread. Tool is made in France. Something to do with French bread?