Stock up with helpers in break (9)

I believe the answer is:

replenish

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

'stock up' is the definition.
'replenish' can be an answer for 'stock' (I've seen this before). I'm not sure about the 'up' bit.

'with helpers in break' is the wordplay.
'with' is a charade indicator (letters next to each other).
'break' indicates anagramming the letters.
'helpers'+'in' is 'helpersin'.
'helpersin' with letters rearranged gives 'REPLENISH'.

Can you help me to learn more?

(Other definitions for replenish that I've seen before include "Refill or make complete again" , "Help siren (anag) - fill up again" , "Top up" , "Replace" , "Restock, refill" .)

I've seen this clue in The Globe and Mail.

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