jeez, I remember the store at Central Square from childhood. I was sad when it closed. Same with Kotobukiya/Porter Square. I still haven't managed to get to Ebisuya but glad to hear it is still going strong. If you are near the south shore at all, Kam Man in Quincy operates as mostly a pan asian supermarket and also has a fair selection of pantry staples but fewer good fresh options.

LapLap, I am sure you may know this but Japan Centre in London does delivery by post and, while they are expensive, they also have a reasonable selection of essentials.

I am on lockdown right now in coastal Scotland so am relying on what things I have managed to bring home from my last trip to Japan in February. Trying to eek them out as long as I can...but I am loving looking at everyone's photos.