Octopus

Popular in Mediterranean, Japanese, and Hawaiian cuisine, octopus is a vitamin b12 rich food. Cooked octopus provides 36μg of vitamin B-12 per 100 gram serving accounting for 600% of the RDA. That is 30.6μg (510% RDA) per 3 ounce serving, or 10.2μg (170% RDA) per ounce. Raw octopus provides about half as much vitamin b12 with 20μg (333% RDA) per 100 gram serving, 17μg (283% RDA) in a 3 ounce serving, and 5.67μg (94.33% RDA) per ounce.