Food expiration dates:
There are some things to understand about this.
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 for a while 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.
Eggs: Three to five weeks after you buy them. Double-grade A will go down a grade in a week, but are still edible.
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 grade in a week, but are still edible. To check if eggs are fresh, put in a bowl of water. If it rises to the surface it is rotten.
Poultry and seafood: Cook or freeze within a day.
Beef and pork: Cook or freeze within three to four days.
Canned good: High acid foods such as tomato sauce can last to 18 months. Low acid such as canned green beans can last for five years. However, do not store these in a hot space. A dry, cool place, is best.
Excerpted from Life’s Little Black Book: Volume 1

