They do not use a sealed container, just the bottom of a cardboard doughnut box and covered with a light paper.

If you look online. Yhe hours are 4 AM to 4 PM. Closed on Sunday. They have damn good donuts.

Probably not. The only difference than regular donuts is potato flour is used instead of regular flour.

Back in the 60s / 70s there was a Spudnut shop or 2 in Auburn, WA. In addition to the great donuts they made sandwiches on the best fresh baked cheese bread. Do any locations still do that?