Stake in Victorian tearoom (4)
I believe the answer is:
ante
'stake' is the definition.
(I've seen this before)
'in victorian tearoom' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ANTE' can be found hidden inside 'victorian tearoom'.
(Other definitions for ante that I've seen before include "Prefix meaning before" , "Stake put up before the deal" , "Fixed stake" , "Opening bet" , "Money for poker" .)