Travelling, she and I did without small extra fare (4,4)
I believe the answer is:
side dish
'extra fare' is the definition.
'side dish' can be an answer for 'fare' (I have seen 'extra food' mean 'side dish' so perhaps 'food' could also mean 'side dish'). I'm unsure of the 'extra' bit.
'travelling she and i did without small' is the wordplay.
'travelling' is an anagram indicator.
'and' says to put letters next to each other.
'without' is an insertion indicator ('without' can be similar in meaning to 'outside').
'small' becomes 's' (abbreviation - e.g. clothes size).
'she'+'i'+'did'='sheidid'
'sheidid' anagrammed gives 'sidedih'.
'sidedih' placed around 's' is 'SIDE-DISH'.
Can you help me to learn more?
(Other definitions for side dish that I've seen before include "Supplementary item at table" , "Food item subordinate to the main one" , "something extra, of course" , "Accompaniment at mealtime" , "tasty companion?" .)