Fish sandwiches to present without thought (4,3)
I believe the answer is:
trot out
'present without thought' is the definition.
I can't judge whether this defines the answer.
'fish sandwiches to' is the wordplay.
'fish' becomes 'trout' (trout is a kind of fish).
'sandwiches' is an insertion indicator (inserted letters are sandwiched in).
'trout' going around 'to' is 'TROT OUT'.
Can you help me to learn more?
(Other definitions for trot out that I've seen before include "Produce (a well-worn account)" , "Produce for show (repeatedly)" , "Repeat without thought" .)