Eggs, especially the yolk, are rich in vitamin B12, along with other essential nutrients. Try incorporating more eggs into your diet for a nutrition-rich meal. 

Fishes like sardines, tuna, and salmon are a great source of vitamin B12. They are also rich in omega-3 fatty acids, making them an excellent choice for a nutritious diet. 

Milk and its products, such as cheese, yoghurt, and butter, are fortified with vitamin B12. Make sure to include these products in your diet to avoid B12 deficiency. 

Even though vitamin B12 is primarily found in animal products, however, fruits and veggies like bananas, berries, spinach, and potato are also vegetarian sources of vitamin B12.