Silver in sport topping for Italian (4)
I believe the answer is:
ragu
'topping for italian' is the definition.
The definition suggests a singular noun which matches the answer.
'silver in sport' is the wordplay.
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'in' indicates putting letters inside.
'sport' becomes 'ru' (rugby union).
'ag' inserted within 'ru' is 'RAGU'.
Can you help me to learn more?
(Other definitions for ragu that I've seen before include "pasta sauce" , "tomato and meat sauce" .)