Using the SAUTE function on the Instant Pot, toast the star anise, cinnamon sticks and cloves for 3 minutes until fragrant.
Add the onion and ginger. Stir and cook for one minute.
Add the broth. and stir.
Add the beef, pepper and salt. Taste to adjust the seasonings.
Place the lid on the Instant Pot and lock it. Set it to the PRESSURE COOK function for 8 minutes on High. Natural release the pressure for 20 minutes before removing the lid.
Skim any fat from the broth using a slotted spoon; then, add Swerve or sugar along with the fish sauce.
Soak the rice noodles in cold water for 15-20 minutes. Some brands require soaking the noodles but others do not. Check the package directions to see if the brand you have on hand requires soaking the noodles. Drain and rinse
In a separate bowl, soak the remaining onion slices in water for 10 minutes.
Boil some water in a pot. Dunk the noodles in the boiling water for 15-20 seconds. Remove and place in bowls.
Ladle the Pho over the noodles.
Top with the onions, fresh basil, fresh bean sprouts, Sriracha sauce, soy sauce, Hoisin sauce, fresh mint, lime wedges, red onion or whatever toppings you like.