One of the rasher philosophers? (5)

I believe the answer is:

bacon

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

'one of the rasher' is the definition.
'bacon' can be an answer for 'rasher' (I've seen this before). I am not certain of the 'one of the' bit.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for bacon that I've seen before include "Irish-born painter" , "Meat - essayist - painter" , "friar" , "Writer of essays" , "famous artist" .)

I've seen this clue in the Evening Standard.

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