These burgers are similiar to White Castle/Krystal type burgers. I use Sara Lee Dinner rolls that come 12 to package and can be found in the bread section of most supermarkets. The recipe sounds complicated, but I prep everything ahead of time so that once I start frying the burgers, I can make 12 of them in less than 15 minutes. I usually serve 3 burgers per serving. I hope you and yours enjoy them as much as my family. These are requested twice a week in my house!