Oscar, ten, thanks the Italian for soup ingredient? (6)
I believe the answer is:
oxtail
'soup ingredient?' is the definition.
(I've seen this before)
'oscar ten thanks the italian' is the wordplay.
'oscar' becomes 'o' (phonetic alphabet: alpha, bravo, charlie etc.).
'ten' becomes 'x' (roman numeral).
'thanks' becomes 'ta' (UK informal version of 'thank you').
'the italian' becomes 'il' (the in Italian).
'o'+'x'+'ta'+'il'='OXTAIL'
'for' acts as a link.
(Other definitions for oxtail that I've seen before include "Nice soup made from bovine appendage" , "Kind of meaty soup" , "neat ending" , "Part of animal used in soups and stews" , "Sort of soup" .)