Step 1

Turn on a multi-functional pressure cooker (such as Instant Pot®) and select Saute function. Heat oil for 1 minute. Season pork with salt and pepper. Add to the pot. Cook and stir until browned evenly on all sides, 4 to 5 minutes. Add flour and cook and stir for 1 to 2 minutes. Deglaze the pot by adding wine, broth, and tomato paste, scraping up all the browned bits from the bottom.

Step 2

Close and lock the lid. Select high pressure according to manufacturer's instructions; set timer for 15 minutes. Allow 10 to 15 minutes for pressure to build.

Step 3

Release pressure carefully using the quick-release method according to manufacturer's instructions, about 5 minutes. Unlock and remove the lid. Stir in onion, celery, carrots, garlic, and bay leaves. Close and lock the lid. Select high pressure according to manufacturer's instructions; set timer for 15 minutes. Allow 5 minutes for pressure to build.

Step 4

Release pressure carefully using the quick-release method according to manufacturer's instructions, about 5 minutes.