Blue Cheese Crumbles

iVillage.com: Food Expiration Dates 101

Unopened: One week after sell-by date on package in the refrigerator.

Opened: Five to seven days in the refrigerator or three months in the freezer.

Blue cheese is supposed to be moldy, but you should discard it if it has any additional mold or changes in color or odor.

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How Long to Keep...

Who hasn't sniffed the milk carton and hoped for the best? It's tough to know when butter, cheese, cream, milk, yogurt and eggs have gone bad so we've created this handy cheat sheet of expiration dates from StillTasty.com. Read on to find out when to toss eggs and dairy products!

Milk

Unopened or opened: One week after sell-by date in the refrigerator or three months in the freezer.

Milk that has been continuously refrigerated will usually remain safe to consume for one week past the sell-by date. Freeze in an airtight container, leaving a half-inch of space at the top because milk will expand when frozen. If it develops an off color, odor or appearance, discard it. Milk is best stored in in the main body of the refrigerator, which is usually colder than the refrigerator door.

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Butter

Unopened or Opened: One month after sell-by date on package in the refrigerator or six to nine months in the freezer.

Butter may be left at room temperature for one to two days, but it will begin to spoil quickly after that if not refrigerated. Salted butter will generally freeze better than unsalted butter. If it develops an off color, odor or appearance, discard it.

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Yogurt

Unopened or Opened: Seven to 10 days after sell-by date in the refrigerator or one to two months in the freezer.

Yogurt that has been continuously refrigerated will usually remain safe to consume for seven to 10 days past the sell-by date. If mold appears, discard the entire package.

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Buttermilk

Unopened or Opened: Two weeks in the refrigerator or three months in the freezer.

Who hasn’t had leftover buttermilk on their hands? For best results, freeze any leftovers in an airtight container.

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Eggs (Raw, In th...

Three to five weeks in the refrigerator or one year in the freezer. Yes, you can freeze raw eggs! Simply crack them into an airtight container (or freezer bag) and add a half teaspoon of salt for every one cup of raw egg. For desserts, use one tablespoon of sugar per cup of raw egg. For regular use, eggs are best stored in their original cartons in the main body of the refrigerator, which is usually colder than the egg rack on your refrigerator door.

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Egg Substitute (...

Unopened: Three months or sell-by date on package in the refrigerator or one year in the freezer.

Opened: Seven days or sell-by date on package in the refrigerator.

For best results, freeze unopened egg substitute in its original package. Otherwise, store it in the refrigerator.

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Cheese in a Bloc...

Unopened: Six months in the refrigerator or six to eight months in the freezer.

Opened: Three to four weeks in the refrigerator or six months in the freezer.

Always keep cheese refrigerated. If mold develops, you can cut away one inch around and below the moldy area and recover the cheese in fresh plastic wrap.

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Coffee Creamer (...

Unopened: Nine months in the refrigerator.

Opened: Two weeks in the refrigerator.

If your coffee creamer develops an off color, odor or appearance, discard it.

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Cheese in a Bloc...

Unopened: One to two months in the refrigerator or three months in the freezer.

Opened: Three to four weeks in the refrigerator or three months in the freezer.

Always keep cheese refrigerated. If mold develops, you can cut away one inch around and below the moldy area and recover the cheese in fresh plastic wrap.

(Photo: David Prince/Foodpix/Getty Images)

The Full Story from iVillage.com

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

Blue Cheese Crum...

Unopened: One week after sell-by date on package in the refrigerator.

Opened: Five to seven days in the refrigerator or three months in the freezer.

Blue cheese is supposed to be moldy, but you should discard it if it has any additional mold or changes in color or odor.

(Photo: Lauri Patterson/Veta/Getty Images)

The Full Story from iVillage.com