Hardly fast food, we hear (4)
I believe the answer is:
sloe
'we hear' is the definition.
I can't tell whether this defines the answer.
'hardly fast food' is the wordplay.
'hardly fast' becomes 'slo' (I can't justify this - if you can you should give a lot more credence to this answer).
'food' becomes 'E' (E is an example).
'slo'+'e'='SLOE'
Can you help me to learn more?
(Other definitions for sloe that I've seen before include "Sour blackthorn fruit" , "Thorny bush with plum-like fruit" , "Black fruit" , "Fruit of the blackthorn does't sound fast" , "Sour blue-black fruit" .)