Rice is a staple food in many Asian countries.

A primary or essential item or element.
Bread is a staple for breakfast.
This tool is a staple for crafters.
He considers coffee a daily staple.
food staple
daily staple
economic staple
essential
necessity
mainstay
Rice is a staple food in many Asian countries.

Relating to a primary or essential item or element.
Water is a staple for survival.
Bread is a staple food for many.
This is a staple item in our store.
staple food
staple diet
staple crop
essential
primary
fundamental