INSTRUCTIONS Add all ingredients except beef to the pot. Stir to combine. Add beef to the pot. Stir to coat, then secure the lid, making sure the vent is closed. Using the display panel select the MANUAL or PRESSURE COOK function*. Use the +/- keys and program the Instant Pot for 20 minutes. When the time is up, let the pressure naturally release for 10 minutes, then quick-release the remaining pressure. Serve beef on pita topped with lettuce, tomato and tzatziki sauce