This book is first part of the 3 volume set focusing on basic and advanced methods for using microbiology as an entrepreneurial venture. This book deals with the concept of entrepreneurship skills for production, cost-benefit analysis and marketing of button, oyster, milky mushroom, Ganoderma sp, Single cell protein, Breads, Cheese, Yoghurt, Wine, Beer, Probiotics, Prebiotics fermented vegetables, and Fermented Fish etc. Chapters cover the applications of microorganisms in small and large scale production to achieve a sustainable output. This book provides essential knowledge and working business prools from all related disciplines of food and dairy industry, probiotics industry, mushroom industry, beverage and baking industry, poultry industry, and aquaculture industry etc. This book is useful to graduate students, research scholars and postdoctoral fellows, and teachers who belong to different disciplines via botany, food microbiology, biotechnology, aquaculture microbiology and poultry microbiology. The other two volumes are focused on agriculture and industrial microbiology.