Tips & Warnings. Steam the tamales in a specified steamer basket. If you have a steamer pot or basket that does not use a stove top for heating, you will need to pour boiling water into the base of the pot and cover with a lid for 1 to 2 hours. Make reference to the instruction manual provided for your particular model to verify.
Arsenic is a trace element that occurs naturally in very small amounts in the diet. Its exact functions are not known. The estimated adult daily intake of arsenic from a typical diet is 12-50 mcg. A dietary requirement of 12-25 mcg/day has been suggested.
Trace minerals are elements that are needed is smaller amounts, 1-100mg/day by adults and are less than .01 percent of total body weight. These include Copper, Chromium, Fluoride, Iodine, Iron, Molybdenum, Manganese, Selenium, and Zinc.