Mature? One’s a pig, mad for cake (8,6)

I believe the answer is:

victoria sponge

I'm a little stuck... Click here to teach me more about this clue!

'cake' is the definition.
(type of cake)

'mature? one's a pig mad' is the wordplay.
'mature?' becomes 'victor' (I can't explain this - if you can you should give a lot more credence to this answer).
'mad' indicates an anagram.
'ones'+'a'+'pig'='onesapig'
'onesapig' with letters rearranged gives 'iasponge'.
'victor'+'iasponge'='VICTORIA SPONGE'

'for' acts as a link.

Can you help me to learn more?

(Another definition for victoria sponge that I've seen is " cake".)

I've seen this clue in The Times and The Sunday Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.