"You have salt and pepper."
Translation:Tu ai sare și piper.
I take it from "Tu ai sare și piper" and " Ai sare și piper" both being correct that subject pronouns are optional. Is this correct?
Yes, it is correct. You can tell the subject from the verb conjugation.
Why would you just tell someone have salt and pepper, and everyone knows you mean that they have it. Very confusing language, my girlfriend better appreciate this