Abstract: A riddling machine for intensification of depositing dead yeast cells (lees) in wine. One embodiment comprises a platform housing an engine and a transmission; supporting means, including rigid ribs, bearings on their tops, rotatably supporting a shaft; two discs mounted at the shaft's ends. A plurality of discs' holes holds cylindrical cases angularly placeable therein. The cases contain bottles with wine and lees, immovably and reversibly inserted therein. The discs are turned, revolving the cases intensifying the lees depositing to the bottlenecks. Some embodiments include vibrators actuating vibrations of the bottles, intensifying the depositing. Other embodiments have a modified expandable shaft to place the cases into the disc's holes at a predetermined angular direction common for all cases, thus tilting the platform orients all the bottles closer to the vertical, intensifying the depositing.