"He eats chocolate cake."
Translation:El mănâncă tort cu ciocolată.
It depends on whether it has chocolate among other things or mainly chocolate based.
could one not mean eating cake with chocolate as opposed to eating chocolate cake
It could mean too, but highly unlikely. If we would need to say that we would say El mănâncă tort și ciocolată I guess.
so in this sentence I can understand "cu" like Spanish "de"? some kind of connection "cake cu/de chocolate"?