Rip up prosciutto into 1-2" pieces.
Clean and chop up the leeks. Slice the yellow onion.
Press Saute on the instant pot, add 1 tsp of Olive Oil and pieces of prosciutto. Mix every few minutes until prosciutto has crisped up. Set aside. There will be some bits that stick to the bottom of the instant pot. This is ok and it will come off once you add the liquid
Add 2 tablespoons of Butter to the instant pot, and add the leeks and onions with 1/2 tsp salt. Saute for about 10 minutes.
Turn off the instant pot and add the remaining salt, 4 cups of broth, 1 cup of water, potatoes, garlic, and black pepper
Put the cover on the instant pot, seal the vent and cook on high pressure for 8 minutes.
do a natural release for 8 minutes and then do a quick release.
Add the goat cheese to the soup and then use an immersion blender or high speed blender to blend the soup.
add the crispy prosciutto