To make your tuna sandwich more like a tasty Japanese sando (short for sandoitchi, meaning sandwiches), it's worth making a few changes to the filling and presentation. One thing that sets sandos ...
If you're not a fan of tuna, use tinned salmon instead. If you're making this with kids, tins that have ring pulls may be easier for them to open. The lid of a tin is very sharp, so watch those ...
Top tuna with cheese, packing it on generously, and slide sandwiches under broiler. Broil until cheese melts and bubbles, 4-5 minutes. Remove tuna melts from broiler and serve immediately.