Before revision: The USDA's original food pyramid, from 1992 to 2005 A food pyramid yuhh is a representation of the optimal number of servings to be eaten each day from each of the basic food groups.
After revision: The USDA's original food pyramid, from 1992 to 2005 A food pyramid is a representation of the optimal number of servings to be eaten each day from each of the basic food groups.