Is such farming fine when there's no rain about? (5)
I believe the answer is:
dairy
'rain about?' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'is such farming fine when there's no' is the wordplay.
I cannot really understand how this works, but
'fine' could be 'ai' (resembles A1, informal term for top quality) and 'ai' is present in the answer.
The remaining letters 'dry' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dairy that I've seen before include "Business supplying milk and its products" , "Type of farm" , "Business supplying milk etc" , "Milk processing room" , "milk supplier" .)