How Long Blue Cheese Lasts in the Refrigerator and How to Store It Properly

Blue Cheese Stays Fresh for 1 to 2 Weeks When Stored Correctly

Blue cheese lasts 1 to 2 weeks in the refrigerator when wrapped tightly and kept at a consistent temperature between 35°F and 40°F. The exact timeline depends on how the cheese was packaged when you bought it, how often you open the package, and whether mold has begun to spread across the surface. Once you open a sealed package, the clock starts ticking faster because the cheese is exposed to air and bacteria from your hands and utensils.

Blue cheese is already colonized with mold cultures — that's what gives it the blue veining and sharp flavor. Those same conditions that make it delicious also mean it can develop unwanted surface molds or dry out quickly if exposed to air. The key to extending its life is creating a barrier between the cheese and your refrigerator's environment.

Key Takeaways

• Wrap opened blue cheese tightly in plastic wrap or parchment paper, then place it in an airtight container or resealable bag to block air exposure.
• Store blue cheese in the coldest part of your refrigerator, usually the back of a shelf or the cheese drawer, away from the door where temperature fluctuates.
• Do not store blue cheese near strong-smelling foods like onions or fish, because it absorbs odors easily and can transfer its pungent smell to other foods.
• Surface mold that is the same color as the intentional blue veining is safe to eat, but fuzzy white or pink mold means the cheese has spoiled and should be discarded.
• Unopened packages last slightly longer — up to 3 weeks — because the original packaging is designed to protect the cheese until you break the seal.

Wrapping and Sealing Matter More Than You Might Think

The moment you open a package of blue cheese, it begins to lose moisture and absorb odors from your refrigerator. Rewrapping it correctly is the single most effective way to slow that process. Start by wrapping the cheese in parchment paper or wax paper rather than plastic wrap alone — these materials let the cheese breathe slightly while still blocking direct air contact. Parchment is better than plastic wrap because plastic can trap condensation, which encourages unwanted mold growth.

After wrapping in parchment, place the cheese inside a resealable plastic bag or an airtight container. This double-layer approach protects the cheese from temperature swings and odor transfer while allowing minimal air circulation. Press out as much air as possible from the bag before sealing. If you use a container, make sure the lid closes completely — even a slightly loose lid lets air and odors circulate.

Do not use aluminum foil directly against blue cheese. Foil can react with the salt and acids in the cheese, creating an off-flavor and accelerating spoilage. If you have foil-wrapped cheese from the store, transfer it to parchment and a bag as soon as you get home.

Location in Your Refrigerator Affects How Long It Stays Fresh

Where you place blue cheese in your refrigerator matters as much as how you wrap it. The coldest zones are the back of the middle and lower shelves, away from the door. The door is the warmest part of your refrigerator because it opens and closes constantly, letting warm air in each time. If your refrigerator has a dedicated cheese drawer or deli drawer, that is an ideal spot — these drawers are designed to maintain stable humidity and temperature.

Keep blue cheese away from the freezer compartment. Freezing blue cheese is possible if you want to extend storage to several months, but it changes the texture permanently — the cheese becomes crumbly and grainy when thawed. Freezing works if you plan to crumble the cheese into salads or sauces later, but not if you want to slice or serve it whole.

Store blue cheese in a separate area from strong-smelling foods like onions, garlic, cured meats, or fish. Blue cheese is highly absorbent and will pick up these odors, making it taste off. Similarly, keep it away from foods that are sensitive to strong smells — blue cheese will transfer its pungent aroma to butter, milk, and soft cheeses stored nearby.

How to Tell When Blue Cheese Has Gone Bad

Blue cheese already has blue and gray veining throughout, so distinguishing intentional mold from spoilage mold takes a moment of attention. The mold you want is blue-gray and evenly distributed throughout the cheese in thin lines or pockets. If you see new mold growth on the surface that is fuzzy, white, pink, or orange, the cheese has spoiled and should be thrown away. These colors indicate bacteria or unwanted mold species that are not safe to eat.

Smell is another reliable indicator. Fresh blue cheese has a pungent, salty, slightly tangy aroma — that is normal and expected. If the smell becomes ammonia-like, sour, or rotten, discard the cheese. A small amount of surface drying is normal and harmless; you can trim a thin layer away if the edge has hardened. But if the cheese feels slimy, smells off, or shows unexpected mold, it is past its prime.

Taste is the final check if you are unsure. A tiny piece of questionable blue cheese will tell you immediately if it has spoiled — spoiled cheese tastes distinctly sour, bitter, or off in a way that is unmistakable. If you are uncertain, it is safer to throw it away than to risk foodborne illness.

Unopened Packages Last Longer Than Opened Ones

If you have not opened the package yet, your blue cheese will last longer — typically up to 3 weeks from the purchase date, depending on the original packaging and how long it sat in the store before you bought it. The original packaging is designed to maintain the right humidity and block air exposure more effectively than anything you can do at home.

Check the sell-by date or use-by date on the package. These dates are conservative estimates based on the cheese being stored at proper temperature from the moment it left the dairy. If you bought the cheese close to that date, plan to open and use it sooner. If you bought it well before the date, you have more flexibility.

Once you open the package, treat it as an opened cheese and follow the 1- to 2-week timeline. The original packaging is no longer protecting the cheese, so your wrapping method becomes the primary defense against spoilage.

Crumbled or Crumbly Blue Cheese Spoils Faster

Blue cheese that is already crumbled or broken into pieces spoils faster than a solid wedge or block. Crumbled cheese has more surface area exposed to air, which accelerates moisture loss and mold growth. If you buy crumbled blue cheese, plan to use it within 5 to 7 days rather than the full 1 to 2 weeks a solid piece would last.

Store crumbled blue cheese in an airtight container with a tight-fitting lid, and keep it in the coldest part of your refrigerator. Do not leave the container open on the counter or in the door. If you find yourself with leftover crumbled cheese that is approaching its limit, crumble it further and freeze it in an airtight freezer bag — frozen crumbled cheese works well in salads, pasta, or burgers even though the texture is no longer creamy.

Frequently Asked Questions

Can I eat blue cheese if it has white mold on the surface?

No. White, fuzzy mold on the surface is not the same as the intentional blue veining inside the cheese. This indicates spoilage and the cheese should be discarded. The blue-gray veining that is part of the cheese is safe; unexpected surface mold is not.

Does blue cheese go bad faster if I cut it with a knife?

Yes. Every time you cut the cheese, you expose new interior surfaces to air and introduce bacteria from the knife. Use a clean knife each time, and wrap the cheese immediately after cutting. The cut surfaces will dry out and may develop unwanted mold faster than an uncut wedge.

Can I freeze blue cheese to make it last longer?

Yes, but the texture changes permanently. Frozen blue cheese becomes crumbly and grainy when thawed. Freezing works if you plan to crumble it into salads or sauces, but not if you want to slice or serve it whole. Frozen blue cheese lasts several months.

What is the best container for storing blue cheese?

An airtight plastic container with a tight-fitting lid works best. Wrap the cheese in parchment paper first, then place it in the container. Glass containers with rubber seals are also good. Avoid plastic wrap alone, which traps condensation and can encourage mold growth.

Should I store blue cheese in the coldest part of my fridge?

Yes. The back of the middle or lower shelf, away from the door, is ideal. If your refrigerator has a cheese drawer or deli drawer, use that instead. The door is too warm because it opens and closes constantly, causing temperature swings that shorten the cheese's life.