Soft, that is, to eat? (3)
I believe the answer is:
pie
'soft that is to eat?' is the definition.
I can't judge whether this defines the answer.
'soft that is' is the wordplay.
'soft' becomes 'p' (musical abbreviation for piano, 'soft').
'that is' becomes 'ie' (abbreviation for id est, 'that is' in Latin).
'p'+'ie'='PIE'
Can you help me to learn more?
(Other definitions for pie that I've seen before include "where blackbirds sang" , "Pastry-crust savoury" , "Very easy answer as" , "Filled pastry" , "In the sky, this is wishful thinking" .)