Abstract: A method and a system for the production of shells of fat-containing, chocolate-like masses. A cooling member (1) having a temperature below 0.degree. C. is immersed in a predosed mass in a mould cavity (2). The cooling member (1) comprises protruding, peripheral engagement parts (4) having a recess (7, 8) which defines a reception volume that geometrically determines the upper, annular rim of the shell (10). This obviates further processing of the shell rim before the shell is joined with other parts. A tight joint is simultaneously ensured.