Ten involved in strike about pudding (7)
I believe the answer is:
'pudding' is the definition.
(tapioca pudding is a kind of pudding)
'ten involved in strike about' is the wordplay.
'ten' becomes 'IO' (IO resembles t0).
'involved' means one lot of letters goes inside another.
'in strike' becomes 'tap' (tap can mean to strike or hit. I am not sure about the 'in' bit.).
'about' becomes 'ca' (abbreviation for 'circa').
'io' put within 'tapca' is 'TAPIOCA'.
Can you help me to learn more?
(Other definitions for tapioca that I've seen before include "Substance from cassava used to thicken puddings" , "Pudding maker" , "Starchy food" , "Milk pudding ingredient" , "Starch from cassava used in making puddings" .)