1.Buy food enough for only a few days
2.Do not buy stale or malodorous food or meat with viscous material on its surface as it indicates its circulation in healthy ways
3.Buy only fresh fish; with shining eyes, firm flesh and flexible while touching, and not viscous and malodorous. Check all these while buying fish
4.Do not buy vegetables that are bruised and stained and spongy while touching
5.Buy clean eggs that do not have cracks on its surface as they may let bacteria in and contaminate the eggs