Add all veggie scraps to the the instant pot. Cover with 8-10 cups of water, or enough to fully cover the vegetables, but under the max fill line.
Lock lid and set Instant pot to high pressure for 1 hour.
Once time is up let the pressure release naturally for 15-30 minutes. Then carefully release pressure.
Let cool. Strain through a fine mesh strainer. Store broth in freezer bags or in glass jars in the freezer until read to use. Broth will keep in the refrigerator for up to 5 days and in the freezer for up to 6 months.
To thaw for use: Let sit in the refrigerator overnight or run under warm water until thawed.