A fast dough-mixer which considerably reduces the time taken by more traditional mixers. it is a solidly-built and reliable machine. The optimal angle of the spiral-breaking-bar in relation to the bowl and the syncronisation of the revolutions of the spiral in relation to those of the guarantee excellent. All types of dough and pastry can, in fact, be mixed, perfectly smoothly. The work cycle from the first to the second spped and the switching off of the machine is automatic.