We lived in Ririe for a little while before we moved to Idaho Falls and people that weren't even from around here would always ask if I had been to Swan Valley for the square ice cream cones. The week we moved from Ririe was my first time and last weekend my husband and I went back with some of his siblings.
The square ice cream is inside a gas station at the split between going to Jackson or going to Driggs, just look for a sign like this and lots of cars.
They have such fun flavor choices I had a birthday cake kind- which doesn't taste like usual cake batter ice cream, it tasted like cake and had pieces of yellow cake mixed in it. It was so good, I also had huckleberry. My husband's two flavors look the same but one is a Rainey Creek Mudslide which had caramel, and some nuts in it and brownie nut.
Single Regular Cone: $2.50
Double Regular Cone: $3.50
Single Waffle Cone: $3.25
Double Waffle Cone: $4.00
Float with root beer, sarsaparilla, or huckleberry soda: $4.75
You can buy huckleberry soda there and I love it. They have a record of people served on holiday weekends and it was tons so I think it would be pretty crazy to go on a holiday. Also, my husband had trouble keepings his top layer from falling off so watch out for that on hot days.