The invention relates to a juice extraction device comprising: an extraction chamber (10) arranged to receive food to be prepared and to expose same to a pressurised steam environment, characterised in that the device comprises means for measuring a preparation time of the extraction chamber (10) that are associated with means for decompressing the extraction chamber (10), arranged so as to: decompress the extraction chamber (10) for a second preparation time, after a first pre-determined preparation time.
