Fungus Agaricus are edible mushroom like compestris and A. brunnescens. However, some other species of mushroom fungi are toxic like toad stools aspergilli are good source of citric acid. Soya sauce (shoyu, brown liquid used for seasoning) is prepared from soyabean meal and wheat by mean of Aspergillus oryzae, Saccharornyces is common yeast and is used in bakery and brewery industry, Some species of Penicillium, P. roquiforti and P. comemberti are used in cheese production.