Brown your ground beef. Set Instant Pot to SAUTE, add ground beef, and stir until browned. Press cancel to end the SAUTE function.
Drain the grease from the ground beef and return to Instant Pot.
Add onion, celery, garlic, cabbage, dill pickle, Worcestershire sauce, and beef broth. Fasten lid, set pressure valve on top to SEALING, and cook for 10 minutes on HIGH PRESSURE.
When the timer goes off press cancel to end the cooking and let it natural release for 5 minutes. Release remaining pressure by turning valve to VENTING.
Remove the Instant Pot lid and turn on the SAUTE function. Add heavy cream and American cheese, stirring until the cheese has fully melted.
In a small bowl whisk together special sauce ingredients.
Once cheese has melted serve soup with a garnish of sesame seeds and a drizzle of special sauce.
Note: We used American cheese from the deli counter for this recipe. This is real cheese and not the "cheese product" sold in individually wrapped slices which you normally think of as American cheese. Disclaimer: We are not certified nutritionists. Our nutrition information is calculated using online databases. Please use this as a guide only.