* 1/2 cup ice

Ice is frozen water in solid crystalline form, produced by the controlled freezing of potable or filtered water. It consists of H₂O molecules arranged in a hexagonal lattice structure, which gives ice its characteristic transparency and hardness. The freezing point of pure water is 32°F (0°C) at standard atmospheric pressure. Ice may be produced through various methods, including commercial ice machines, home freezers, and blast-freezing techniques. The crystal structure and size of ice can vary depending on the freezing speed and water purity; slower freezing typically produces larger, clearer crystals, while rapid freezing creates smaller, cloudier ice.

Ice serves multiple functions in the culinary arts, primarily as a cooling and chilling agent in beverages and food preparation. It is essential in the creation of cocktails, smoothies, iced coffee, and cold soups, where it both chills the liquid and provides dilution as it melts. Ice is also used in tempering techniques to rapidly cool cooked foods, in ice baths for food safety during thawing, and as a presentation element in plated dishes. Additionally, crushed ice is employed in certain preparations such as granitas, shaved ice desserts, and as a base for seafood displays. The rate of melting and the texture of the ice (cubed, crushed, or shaved) significantly affect the final product's temperature, texture, and flavor concentration.