Water in a paddy flowed backward inside a market (5,3)
I believe the answer is:
adams ale
'water in a paddy' is the definition.
'adam's ale' can be an answer for 'water' (humorous term for water). I am not sure about the 'in a paddy' bit.
'flowed backward inside a market' is the wordplay.
'flowed backward' becomes 'ada' (I can't explain this - if you can you should believe this answer much more).
'inside' means to look at the middle letters.
'a' becomes 'amp' (A is the symbol for the amp or ampere).
'market' becomes 'sale' (I've seen this in other clues).
The centre of 'amp' is 'm'.
'ada'+'m'+'sale'='ADAMS ALE'
Can you help me to learn more?
(Other definitions for adams ale that I've seen before include "Liquid refreshment" , "Drink - a sad meal (anag)" , "water instead" , "simple drink" , "Water (humorous)" .)