Clean the bangus (milkfish) but don’t remove the scales. Slice the back of the milkfish and remove the stomach fat. Rub salt and pepper on the external and internal part of the milkfish.
In a bowl mix the onion, ginger, tomatoes and season with salt and pepper. Put the mixed ingredients into the sliced back of the milkfish. On each side grill the milkfish over charcoal for 15 to 20 minutes.
Serve while it’s hot with soy sauce and calamansi.