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What You Need To Know About Food Expiration Dates

2 min readJul 17, 2025

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Preparation and Survival Guide

First, there are several terms stamped on the food. This is what they mean:

SELL BY: How long a store should display the product for sale. This is a guide for the store. It is optimum quality date, but food is still edible for a while after.

BEST IF USED BY OR BEFORE DATE: This is only about quality, not safety.

GUARANTEED FRESH DATE: This usually refers to bakery items. They will still be edible after that date.

USE BY DATE: This is the last recommended day to use the product at peak quality. It is still edible after this.

PACK DATE: This is on canned and packaged goods. This actually might not be clear as sometimes it’s in code. It can be done by month-day-year as MMDDYY. Or it could be Julian calendar for the year by day, which means January is numbered 001–0031. December would be 334–365.

Foods not to eat past their expiration date?

Eggs. Deli meat. Mixed greens. Alfalfa sprouts. Oysters. Shrimp. Raw ground beef. Berries. Soft cheese. Chicken.

So how long is food usually good for?

Milk: a week after Sell By.

Eggs: Three to five weeks after you buy them. Double-grade A will go down a…

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Bob Mayer
Bob Mayer

Written by Bob Mayer

West Point grad; Special Ops Vet; NY Times bestseller of over 80 books; for free books and over 200 free downloadable slideshows go to www.bobmayer.com