Bit of food (5)
(Other definitions for morsel that I've seen before include "Tidbit" , "Tiny piece" , "(Tasty) bit" , "A scrap or shred of food" , "Small amount of food, a bite" .)
'bit of food' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for viand that I've seen before include "Item of food (arch.)" , "loaf of bread, maybe?" , "something to eat" , "Meat; article of food" .)