The invention provides a beverage preparation system (1) for the preparation of hot and cold beverages, which system comprises a hot beverage ingredient cartridge (2′), a cold beverage ingredient cartridge (2), and a beverage preparation device (4) adapted to prepare hot and cold beverages. According to the invention, the beverage preparation device (4) comprises a water dispensing manifold (10) for directing hot water and cold water to a dispensing location, the water dispensing manifold (10) comprising a feed lace (11), a cold water conduit (14) and a hot water conduit (16) that ends in a port (20) provided in a wall of the cold water conduit (14). The hot water conduit (16) has a cross section that is smaller than the cross section of the feed lance (11), such that a flow of hot water fed from the hot water conduit (16) into the feed lance (11) via the port (20) passes through part of the cold water conduit (14) and through the feed lance (11) without contacting them.