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1·When the Onions are very soft and reduced, turn up the heat so they caramelise, then cook for another 12-15 mins, stirring along the bottom of the pan occasionally to mix in the brown sticky bits.

当洋葱充分变软和缩小后，在转大火12到15分钟，不断搅拌底部，使洋葱微微发焦，变成棕色小片。