The basic thing to remember while shopping for cold food is you must always put it the last thing in your cart.
Bacteria can develop well at room temperature. That is why you must shop for perishable food items such as meat, fish, eggs, poultry and dairy products in the end. Make it a point that you head towards home as fast as possible if you have any of the above items with you.
Don’t finish any pending errands or stop at the gas station, and drive home your groceries immediately. They can thus be put into the refrigerator fast.