When I moved away from Chicago, I thought that the lack of poppy seed hot dog buns in my new hometown was something I could remedy by looking harder when shopping. It took awhile for me to figure out that poppy seed buns aren't popular outside Chicago. Everywhere I asked about them, I got quizzical looks, but no buns. Some hot dog vendors elsewhere sell Chicago-style dogs with poppy seed buns, but grocery stores don't sell them at all. Ever. Of course, my answer is to make my own.