Answers to Important Questions (that you never thought would be asked)

Is Vegemite Banned in the United States?And what's in it, anyway?

From Slate

Australians living in the United States are spooked because of rumors of a ban on Vegemite. Recent media reports from Down Under have claimed that U.S. customs officials have started searching for the spread. The U.S. government denies that the Aussie delicacy will be banned. What's in Vegemite, anyway?

A lot of yeast. Vegemite is a brown, salty paste made of leftover brewers' yeast mixed with vegetables and spices. Australians and New Zealanders often spread it on toast with butter. The taste is strong and bitter, so the spread, which has a consistency similar to margarine, is used very lightly.

The rumors about a possible Vegemite ban stem from the spread's high concentration of folate, a water-soluble B vitamin. Folate is a vital nutrient that, among other things, helps form red blood cells and prevents neural tube defects in fetuses. Artificial folate, also known as folic acid, is highly regulated by the Food and Drug Administration, though, and only approved for use in a few foods (such as breakfast cereals). But since Vegemite's folate is naturally occurring—brewers' yeast contains several B vitamins—it is not banned in America. (Nutritionists typically use "folate" when referring to the naturally occurring vitamin and "folic acid" for the synthetic version.)

Wow scary stuff. Perhaps it is perceived to be potential constituent of a liquid bomb.