How is fermented food obtained?

Fermented food is obtained through the process of fermentation, where microorganisms such as bacteria, yeast, or molds convert carbohydrates in food into alcohol or organic acids. This process usually occurs under anaerobic conditions (without oxygen) and can enhance the food's flavor, texture, and nutritional value. Common examples include yogurt, sauerkraut, and kimchi, which are created by allowing specific microbes to thrive in a controlled environment. The result is not only preservation but also the development of unique tastes and health benefits.