In this episode of Teach Me How To Vegan we welcome back special guest Registered Dietitian Gabriel Gaarden to help us take a deep dive into all things relating to vitamin B12 and better understand why it is frequently talked about when discussing vegan diets. We also discuss where vitamin B12 comes from, why we need it, how much we need, and how we can be sure we are getting enough vitamin B12 on a vegan diet.