Sprinkle the seasonings over each salmon fillet. Then top each fillet with a slice of butter and a lemon slice.
Add 1 cup/250 ml water to the bottom of the Instant Pot/pressure cooker bottom. Add the trivet to the Instant Pot and arrange the salmon on top of the trivet.
Close the lid and turn the pressure valve to sealing. Cook on high pressure using the "manual" or "pressure cook" function for 3-5 minutes. I cooked my salmon for 4 minutes. When the cooking time if over carefully turn the pressure valve to quickly release the pressure.
Serve the salmon with a side salad and top with your favourite dill mayonnaise and the lemon slice.