Flavouring also, I understand, goes into it (7)
I believe the answer is:
aniseed
'flavouring also' is the definition.
'aniseed' can be an answer for 'flavouring' (I've seen this before). I am unsure of the 'also' bit.
'i understand goes into it' is the wordplay.
'understand' becomes 'see' (synonyms).
'goes into' indicates putting letters inside.
'it' becomes 'and' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'i'+'see'='isee'
'isee' placed into 'and' is 'ANISEED'.
Can you help me to learn more?
(Other definitions for aniseed that I've seen before include "Die sane (anag)" , "Pernod flavouring" , "Strong flavour" , "Liquorice flavouring -- ie Danes (anag)" , "Liquorice-flavoured seeds" .)