Staple food comes in different forms.
Staple food . Main staple foods are derived either from vegetals and animal products , including cereals ( such as rice , wheat , maize , millet , or sorghum ) , starchy tubers or root vegetables ( such as potatoes , cassava , yams , or taro ) , meat , fish , eggs , milk , and cheese . Staple foods may also contain ( depending on the region ) : olive oil , coconut oil and sugar ( e.g. from plantains ) .