Eggs
Another source of vitamin B12 for vegetarians is eggs. A large hard-boiled egg contains 0.6 mcg of vitamin B12. Eggs are also rich in protein, another nutrient that is indispensable in some vegetarian diets.
Dairy products
Eating dairy products is one of the simplest ways to get enough vitamin B12 in a vegetarian diet. Try yogurt for breakfast, milk in the afternoon, and a few slices of cheese as a snack.
Seaweed
A 2014 study said that seaweed is a good source of vitamin B12. This seaweed product is commonly used in Asian countries. Research recommends eating 4 grams of dried seaweed to meet your daily vitamin B12 needs.
shiitake mushrooms
Like seaweed, some mushrooms, including shiitake mushrooms, contain vitamin B12. However, the levels are relatively low. You will need to consume about 50 grams of mushrooms to meet your daily vitamin B12 needs.
