In a bowl or deep dish mix the broth with the balsamic vinegar, sugar, corn starch, and mustard. Stir well and set aside.
Place the stainless steel inner pot inside the Instant Pot®. Press Saute and set time to 4 Minutes. Sear the turkey with olive oil and salt and set aside.
When the sauté time is up, add the broth mixture from step 1, the cranberries, and rosemary.
Close and lock the Instant Pot® lid. Make sure the steam release handle is turned to Sealing. Press Pressure Cook, pressure level High, and set time to 6 Minutes.
When done cooking, press Cancel and turn the steam release handle to Venting. Once all the pressure has been released, open the lid and serve.