Teacher's favourite job with university - beginning to make fuel (9)
I believe the answer is:
petroleum
'fuel' is the definition.
(I know that petroleum is a type of fossil fuel)
'teacher's favourite job with university beginning' is the wordplay.
I cannot quite see how this works, but
'favourite' could be 'pet' (synonyms) and 'pet' is found within the answer.
'job' could be 'role' (a job is a role or position) and 'role' is present in the answer.
'university' could be 'u' (abbreviation for university) and 'u' is located in the answer.
A single letter 'm' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'to make' is the link.
Can you help me to learn more?
(Other definitions for petroleum that I've seen before include "Crude oil" , "It helps in getting things moving" , "Hydrocarbon oil" , "Oil well product" , "Fuel oil" .)