Big store in Jersey Dairy Farm, Yerrinbool (4)

I believe the answer is:

myer

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

'big store' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'jersey dairy farm yerrinbool' is the wordplay.
'MYER' is hidden in amongst the letters.
But, I am not sure how the hidden word is indicated.

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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