One might get food by filling hot jacket potato, finally ordered selection (9)
I believe the answer is:
toothpick
'one might get food by filling' is the definition.
I can't judge whether this definition defines the answer.
'hot jacket potato finally ordered selection' is the wordplay.
'finally' indicates one should take the final letters.
'ordered' indicates an anagram.
'selection' becomes 'pick' (synonyms).
The last letters of 'jacket potato' are 'to'.
'hot'+'to'='hotto'
'hotto' with letters rearranged gives 'tooth'.
'tooth'+'pick'='TOOTHPICK'
Can you help me to learn more?
(Other definitions for toothpick that I've seen before include "Thin piece of wood" , "Pointed food remover" , "After dinner stick" , "Dental accessory" , "After-dinner mouth cleaner" .)