[cphajduk]

Yes sorry. You are right I wasn't very clear and also I didn't realize that B12 actually comes from bacteria and archaea.

The organisms that provide us vitamin B12 tend to host said bacteria and archaea within their GI.

Alternatively supplements are provided (as I mentioned). Nutritional yeast, dairy, and vitamin pills are some of the ways in which vegetarians survive. Apparently certain beans are high in B12 as well!

[pwinnski]

Beans are often a staple for vegetarian and vegan diets, so that makes a lot of sense. Thanks for the follow-up!