Split open on the outside, tine originally prodding uncooked sausage (9)
I believe the answer is:
bratwurst
'sausage' is the definition.
(bratwurst is a kind of sausage)
'split open on the outside tine originally prodding uncooked' is the wordplay.
'split open' becomes 'burst' (I can't explain this - if you can you should believe this answer much more).
'on the outside' means one lot of letters goes inside another.
'originally' indicates taking the first letters.
'prodding' is an insertion indicator (prod can mean to poke a hole into something).
'uncooked' becomes 'raw' ('raw' can be similar in meaning to 'uncooked').
The initial letter of 'tine' is 't'.
't' going within 'raw' is 'ratw'.
'burst' going around 'ratw' is 'BRATWURST'.
Can you help me to learn more?
(Other definitions for bratwurst that I've seen before include "German pork sausage" , "Type of German sausage" , "German port sausage" , "banger" .)