Fungal metabolism consists of biochemical reactions that allow fungi to grow and produce both primary and secondary metabolites. Primary metabolites such as vitamins and amino acids are essential for growth, while secondary metabolites like antibiotics are not necessary for growth but are useful for industry. Fungi play important roles in producing various foods and beverages through fermentation. For example, yeast is used to make bread rise, while molds like Penicillium roqueforti and Penicillium camemberti are used to produce blue veins in Roquefort cheese and a white crust on Camembert cheese. Soy sauce is produced by fermenting soybeans and wheat with the mold Aspergillus oryzae to create koji, which is