Hydrochloric acid a hazardous liquid which must be used with care. When used on brickwork the reaction with the mortar only continues until the acid has all been converted, producing calcium chloride, carbon dioxide, and water: Many chemical reactions involving hydrochloric acid are applied in the production of food, food ingredients, and food additives. Typical products include aspartame, fructose, citric acid, lysine, hydrolyzed vegetable protein as food enhancer, and in gelatin production. Food-grade (extra-pure) hydrochloric acid can be applied when needed for the final product. Gastric acid is one of the main secretions of the stomach. It consists mainly of hydrochloric acid
Food presentation in food aesthetics is the development of molecular food in Spain, which emphasizes the essence of food using scientific elements. Molecular science can break down the roles of carbohydrates and protein in order to isolate what creates particular tastes. For instance, modern science makes it possible to freeze ice cream using liquid nitrogen and create wine using sugars, creating efficient and visually interesting new dishes. Like other aspects of culture, food presentation is subject to trends and fads. For instance, "unicorn food", a style of presentation that uses a rainbow color palette to decorate food, became popular in 2017. The