Start by cutting the meat into large pieces and washing it.
Place the meat in the pressure cooker and cover with water. Don't cover it with the lid because, in this step, you just need to boil it to remove the excess fat.
While the meat is going through the first boiling step, wash and cut the carrots and the celery into large pieces, the cherry tomatoes and the potatoes in half, and the onions just peeled but leave them whole. Finely chop the sundried tomatoes.
When you see that the meat starts releasing its fat, already after 15 minutes, you can start removing it with a skimmer. You need to repeat this process a few times for at least half an hour until the water is clean.
Once the water with the meat is clean, add all the veggies and the salt.
Add a bit of water to cover everything and close the pressure cooker with the lid.
Cook it for 30 minutes from the whistle.
Serve it on a large plate where you place both pieces of meat and the veggies. You can open your meal with a little broth or by cooking a bit of soup-type pasta in a separate pot to serve as a consommé.