Cereal from a south coast town (3)
I believe the answer is:
rye
This clue could be a double definition.
'cereal' is the first definition.
(I know that rye is a type of cereal)
'a south coast town' is the second definition.
'rye' can be an answer for 'town' (town in East Sussex). I'm not sure about the 'a south coast' bit.
'from' is the link.
Can you help me to learn more?
(Other definitions for rye that I've seen before include "Grass - whiskey" , "Grain crop" , "Wheat-like cereal plant" , "Grain used in flour and whiskey" , "American whisky" .)