A machine for tempering chocolate comprising:- a tank (1), set within which is a stirring means (2) rotatably mounted within the tank and governed in rotation by first actuator means (12)- a duct (3), which extends upwards, preferably in a vertical direction, in fluid communication with said tank and is designed to receive at its bottom end chocolate coming from said tank, there being rotatably mounted within said duct a worm conveyor element (8), governed in rotation by second actuator means (12) and designed to convey the chocolate along said duct up to a delivery mouth (14) provided on the top part of said ductsaid machine being characterized in that:said second actuator means (12) are mounted at the top of said duct (3) and in that means (16, 22, 24) are provided for mounting and removal of said conveyor element, which can be activated between a first condition, in which said conveyor element is rotatably mounted in said duct, and a second condition, in which removal of the conveyor element is enabled through the bottom end of said duct.
