Abstract: The installation comprises a static mixer (1) connected to receive yoghurt from a yoghurt store (4) and a flavoring from a selected flavoring store (8 to 10). The amount of yoghurt and flavoring dispensed is measured by appropriate metering pumps (11 to 14). The static mixer has a bottom outlet (1a) under which a beaker (20) is placed to receive a portion of flavored yoghurt. The beaker stands over a waste funnel (19) to catch drips and spills. A wash tank (22) is provided together with various feeds for rinsing and/or cleaning materials (27 to 28). The wash tank is connected via a pump (33) and a duct (31) to a spray head (34) in the yoghurt store (4). A thorough automatic rinse-wash-rinse cycle can be performed, whenever necessary. The rinse cycles are preferable open circuit cycles, and the wash cycle is preferably a closed circuit cycle.