I got this to combine with my presto 8 qt My wife likes homemade mashed potatoes...that's what she makes for her family probably 4 times a week (we eat at home 95% of the evening meals --she is a wonderful mom and teaches our 11 and 13 her tips and tricks--she spoils us.  But  mashed potatoes take 20-30 minutes cook time.  Well after reading bunch of things and watching video's i said lets try this cut our cooking time by 2/3.  So potatoes are easy now---1/ 1/2 cup water 5 russet potatoes cook 5 min at pressure (bobble rocking starts the timer)  take off heat let come to base pressure. prep other things mix right in the same pan. easy peasy  WOW they are done SAVED A TON OF TIME