A grape press is a device used to extract juice from grapes, primarily for winemaking. It works by applying pressure to the grapes, breaking their skins and releasing the juice. There are various types of grape presses, including traditional basket presses and modern pneumatic presses, each designed to efficiently separate juice from the solid grape material. In the winemaking process, the extracted juice is often fermented with yeast to produce alcohol. The quality of the grape press can significantly influence the flavor and characteristics of the final product, making it an essential tool for vintners and wineries.