Sour powder is a type of food ingredient that adds a tangy, acidic flavor to various dishes and snacks. It is often made from citric acid, malic acid, or other souring agents, and is commonly used in candies, beverages, and seasoning blends. The powder can enhance the taste of foods by providing a sharp contrast to sweetness or richness. This ingredient is popular in many cultures and is frequently found in products like sour candies, sour gummy worms, and flavored popcorn. Sour powder can also be used in cooking to create marinades or dressings, making it a versatile addition to both sweet and savory recipes.