Gelato machines are specialized appliances designed to make gelato, a creamy Italian frozen dessert. They work by mixing and freezing ingredients like milk, sugar, and flavorings while incorporating air to achieve a smooth texture. These machines come in various sizes, suitable for home use or commercial production. Many gelato machines feature built-in compressors, allowing for continuous operation without pre-freezing the mixture. Some models also include digital controls for precise temperature and mixing settings. Popular brands include Cuisinart and Nemox, which offer user-friendly options for both beginners and experienced gelato makers.