Tinned food (4)
(Other definitions for tuna that I've seen before include "Marine food for your strange aunt" , "Type of fish" , "Yellow-finned fish" , "Popular food fish" , "Large sea-fish" .)
(Other definitions for baked beans that I've seen before include "Tinned vegetables" , "Haricots in tomato sauce" , "food campers might have" , "veg too" , "Full English breakfast essential?" .)