In your Instant Pot place in it the diced turkey breast along with olive oil and a little salt and pepper. Sauté until the turkey is nearly cooked.
Cancel the sauté.
Chop the potatoes into medium sized chunks. Slice the cabbage into strips and place both the cabbage and the potatoes into the Instant Pot.
Add 240ml of turkey stock to the Instant Pot place the lid on and set it to sealing.
Cook for 10 minutes of the steam function.
Manually release pressure and remove about ½ of the stock so that the mash won’t be runny.
Mash it in the Instant Pot with the milk, butter, soft cheese and finish by seasoning it with salt, pepper and parsley.
Give it a good mix around so that the turkey is not just at the bottom and that the cheese has had chance to be well mixed.