Place adzuki beans in the instant pot and add water. (beans can be soaked or un-soaked, see note)
Seal the pressure cooker lid and set the vent to sealed.
Select high pressure and set the timer. See recipe notes for times.
When the instant pot has finished cooking, allow the pressure cooker to naturally depressurize for at least 10 minutes before releasing the remaining pressure and opening.
Notes
For un-soaked beans:
Cook 25 minutes at high pressure for very soft adzuki beans for red bean paste
Cook 16 to 20 minutes for firm beans for chili, soups, salads and stew.
For beans soaked 6 to 8 hours before cooking:
Cook 10 minutes for very soft adzuki beans for red bean paste
Cook 4 to 6 minutes for firm beans for chili, soups, salads and stew.