Step 1

Place flour, pepper and salt in a bag. Add beef and shake to coat.

Step 2

Heat oil in a pressure cooker, add beef and brown on both sides. Once browned, remove beef and set aside.

Step 3

Add celery, carrot, onion and garlic to the pressure cooked and fry until soft.

Step 4

Add tomatoes, beef stock, thyme and salt and pepper to taste. Stir until simmering and return beef to the pot. Turn off saute function.

Step 5

Place the lid on the pressure cook and cook for 60 minutes.

Step 6

To make the mash, in a saucepan, heat milk and water until boiling. Turn down to a simmer and slowly pour in polenta, whisking the whole time until thickened.

Step 7

Add butter and parmesan, salt and pepper to taste and turn off heat.

Step 8

Serve beef and gravy with polenta and parsley and lemon zest if desired.