Staple food comes in one form only.
Main staple foods are derived either from vegetals and animal products , including cereals -LRB- such as rice , wheat , maize , millet , or sorghum -RRB- , starchy tubers or root vegetables -LRB- such as potatoes , cassava , yams , or taro -RRB- , meat , fish , eggs , milk , and cheese .	tubers	Tuber	rice	rice	wheat	wheat	maize	maize	millet	millet	sorghum	sorghum	cassava	cassava	taro	taro	meat	meat	fish	fish	milk	milk	cheese	cheese
