When choos­ing be­tween op­tions, peo­ple of­ten say X it is. For ex­am­ple:

  • Dick: What do you want to eat?
  • Jane: I want pizza.
  • Dick: Pizza it is.

I am cu­ri­ous whether say­ing X it is is just slang an ex­pres­sion that’s so far “be­low the level of stan­dard ed­u­cated speech” that it would be con­sid­ered in­ap­pro­pri­ate lan­guage for work­place use, or whether in con­trast X it is can be used for­mally enough that it’s in­deed suit­able for use in a ca­sual work­place en­vi­ron­ment af­ter all.

  • 5
    It's no slang but it's not especially formal. It would be fine in a casual workplace environment. A (much) more formal version is so be it.
    – user339660
    Aug 12 '19 at 14:10
  • 2
    "Slang" does not mean "informal". Here are examples of slang: Whoa there, Nellie, cool your jets! Just one cotton-pickin’ minute, now, Angel Cakes, you just hold your horses while I go powder my keester.
    – tchrist
    Aug 12 '19 at 14:20
  • 1
    Luca, I’ve tried to edit your post for focus and clarity, and to supply more appropriate tags than slang. If my edit has misstated or misunderstood the focus of your question, please feel free to re-edit it yourself so that I’m not putting words in your mouth you would not want to have said.
    – tchrist
    Aug 12 '19 at 14:49
  • 1
    I find nothing wrong with the phrase. Whether or not it's too informal is a matter of opinion. I also find nothing about it that's at odds with formality. What would be more formal? Then pizza it shall be? Even if that's considered more formal, I'd also call it less idiomatic, and still prefer the original version. (Unless I were trying to say something in a tongue-in-cheek, almost archaic, manner.) Aug 12 '19 at 21:54
  • @tchrist one minute you're quoting middle English texts, the next you're down with the kidz. Aug 18 '19 at 19:03

I am curious whether this is just slang and if it can be used formally (meaning in a casual workplace environment).

Pizza it is, then. would be a more common reply and even if the reply is Pizza it is the meaning remains Pizza it is, then. As this sentence is complete and the meaning clear then yes it could be used formally.

Actually the use of a rhetorically answer like this is similar to the positive negative question and answer used commonly in other languages. It is a way of confirming the answer by repeating the answer/subject. (often to a customer so it is clear what they are ordering).

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