> Most humans’ first encounter with umami is breast milk....
Do you have a source that you could cite that shows that human breast milk contains MSG? Thanks.
http://en.wikipedia.org/wiki/Umami
^ Agostini C, Carratu B, Riva E, Sanzini E (August 2000). "Free amino acid content in standard infant formulas: comparison with human milk". Journal of the American College of Nutrition 19 (4): 434–438. PMID 10963461 .