"The food is too salty."
Translation:Maten är för salt.
The word salt is both the adjective and the noun when speaking about food.
The robot pronounces it like „för“ and „salt“ seperately. Is that the correct way, or it should be „föRSalt“ with a SH-sound?
too means that it's overly salty, not just very salty but more salty than someone wants it to be. And that is för in Swedish.
Don't forget that words with "jätte-" are always written as compound words; "Jättesalt"