The present invention regards a mixer with rotatable bowl (10), comprising a support framework (11) for a driven rotatable bowl (12), for containing a dough, inside which there is arranged to operate at least one driven mixing tool, said rotatable bowl (12) comprising an inner container (13) at least laterally surrounded by means for the thermal treatment of the inner container (13), the means for the thermal treatment of the inner container (13) being of the thermal exchange fluid type. The thermal treatment means comprise reversible connection means (17), for filling the thermal treatment means with a thermal exchange fluid, such reversible connection means (17) being configured to alternatingly take a configuration selected from among a connection configuration, with the rotatable bowl (12) inoperative, for introducing and circulating the thermal exchange fluid in the means for the thermal treatment of the inner container (13), and a disconnection configuration, with the rotatable bowl (12) available for t
