Anaerobic digestion plays a pivotal role in the food industry by offering a sustainable solution for managing organic waste and reducing environmental impact. Food processing and manufacturing facilities generate substantial amounts of organic waste, including leftover food, agricultural residues, and processing byproducts. Anaerobic digestion processes these wastes, converting them into biogas primarily composed of methane and carbon dioxide. This biogas can be used on-site to generate heat and electricity, thereby reducing reliance on fossil fuels and lowering greenhouse gas emissions. Additionally, anaerobic digestion produces nutrient-rich digestate, which can be used as a biofertilizer, completing a circular economy loop by returning nutrients to agricultural soils. The technology not only addresses waste management challenges but also supports sustainable practices within the food industry, promoting resource efficiency and environmental stewardship. As global efforts intensify to achieve sustainable development goals, anaerobic digestion stands out as a crucial technology for fostering a more circular and environmentally responsible food production system.