Heat 2 tbsp bacon fat in Instant Pot on Saute functionChop your veggies and saute for about 5-10 minutes, stirring occasionally until celery softens and onions start to turn translucentAdd broth and scrape bottom of pot to loosen browned bitsStir in all remaining ingredientsSet to Soup function and adjust time to 12 minutes, allow to naturally releaseStir gently and salt and pepper to taste when serving