The invention provides a fermentation arrangement for fermenting a brew including a vessel having an internal volume adapted to support fermentation of a brew therein, a settable energy device arranged to deliver and extract energy respectively to and from the internal volume of the vessel, and a temperature controller device for controlling the amount and period of energy delivery and extraction of the settable energy device to achieve a temperature within the vessel according to one or more modes of operation, wherein the modes of operation include at least a storage mode associated with the end of fermentation, and the setting of energy in the storage mode is such as to maintain the fermented brew in a stable state. End of fermentation may be detected by measuring for temperature stratification, using temperature sensors positioned at different heights of the brew.
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