Learn about the benefits, sources, and symptoms of vitamin B12 deficiency. Find out which foods are high in vitamin B12 , including animal products, fortified cereals, seaweed, tempeh, quinoa, and fruits like apples, bananas, and blueberries. Best Vitamin B12 Rich Foods & their Benefits: Learn more about the foods containing vitamin B12, fruits, vegetables, and meat options, their benefits and symptoms of deficiency. The best vitamin B12 foods include clams, liver, and trout. Fortified foods , such as cereals and nutritional yeast, are plant-based alternatives. Learn more here. Discover the top vitamin B12 -rich foods to boost your energy and health. Explore the best sources and benefits of this essential nutrient.