Nearly 150 years (and millions of convenience-store egg salad sandwiches) later, yoshoku is indelibly part of Japanese cuisine, bolstered by craft-driven tradition and steeped in comfort-food ...

mash half an avocado into the egg salad mixture. The avocado adds creaminess and a rich flavor, making it a perfect match for the Japanese egg sandwich recipe. Crisp up some bacon and crumble it ...