Precision fermentation is an advanced biotechnological process that uses genetically engineered microorganisms to produce specific functional ingredients. Unlike traditional fermentation, it allows for the precise production of proteins, enzymes, fats, and other molecules identical to those found in animals or plants. This method is widely used in developing alternative dairy, meat, and egg products. Precision fermentation ensures consistency, scalability, and sustainability. It reduces reliance on animal agriculture and minimizes environmental impact. The process involves designing microbial strains to express target genes and optimizing fermentation conditions. It holds great promise for the future of food, pharmaceuticals, and cosmetics.