Ducks, that sounds like it'd be good on some kinds of firm-fleshed fruit too. Bet you could change out the condensed milk for the same quantity of yoghurt for a more piquant effect, more zingy than sweet.
Sangas are... deli sandwiches, of cold cuts? There's some
yobbo down your way who thinks the term ought to be read out of the lexicon as distastefully obsolete -- corny, in a word.