The bacon has been open in the fridge since last weekend, the lean looks a shade darker than it did, and the fat has a faint yellow tint. Bacon is cured and smoked, so it feels like the kind of thing that should keep for ages. The storage chart disagrees, and a few quick checks will tell you whether this pack is still worth cooking.
The 60-Second Answer
Raw bacon keeps 1 week in the refrigerator and 1 month in the freezer, according to FoodSafety.gov, and the freezer figure is about quality. Throw it out if it smells sour, feels slimy, or the lean has turned grey or green. Fat that has gone yellow and sticky with a stale smell is a sign the fat is turning rancid. That is a flavour problem, and bacon that tastes stale is rarely worth cooking.
Cured Does Not Mean It Keeps Forever
Curing salt and smoke change the colour and flavour of pork belly. They do not turn bacon into a shelf-stable product. FoodSafety.gov lists bacon in the refrigerator section of its chart with 1 week, the same time it gives fully cooked sausage.
Keep it in a refrigerator at 40°F or below, and treat an opened pack the way you would any other raw pork. The chart gives bacon one number for the fridge and does not split it into opened and unopened, so check the date on the package as well.
| Bacon | Refrigerator (40°F or below) | Freezer (0°F) |
|---|---|---|
| Raw bacon | 1 week | 1 month (quality) |
| Left out of the fridge | Discard after 2 hours, or 1 hour above 90°F | Do not freeze; discard |
| Cooked bacon | No separate chart entry; cooked meat leftovers get 3–4 days | Cooked meat leftovers: 2–6 months (quality) |
Storage times are from the FoodSafety.gov cold storage chart. Freezer times describe quality. Bacon held at a constant 0°F stays safe indefinitely, but the flavour of the fat declines the longer it sits.
How to Check Raw Bacon
Smell first. Good bacon smells of smoke, salt and pork. A sour, fishy or ammonia-like smell means it has spoiled.
Then touch it. Raw bacon is naturally a little moist. A slick, slimy film on the lean that coats your fingers is a spoilage sign.
Look at the lean. Fresh bacon has pink to red lean and creamy white fat. Grey, green or brown-grey patches on the lean, or any fuzzy spots of mould, mean the whole pack goes. Colour is not reliable on its own, so read it together with the smell and feel.
Check the package. A vacuum pack that has puffed up with gas is spoiled, whatever the date says.
What Does Not Always Mean Spoilage
Yellowed fat. As bacon fat ages it can turn yellow and a little tacky and pick up a stale, cardboard-like smell. That is rancidity, a change in the fat that ruins the flavour. Treat it as a quality verdict: the bacon will taste off, and it is past the point where it is worth your pan.
A smell on opening a vacuum pack. USDA describes a “confinement odor” in vacuum-packed meat that fades once the pack has been open to the air. If the smell is still there after a short airing, or it is sour, it is spoilage.
Darker edges on a strip that touched the air in an opened pack. On its own this is a colour change, and colour alone does not decide it. Go by smell, texture and how many days the pack has been open.
Cooking and Handling Bacon Safely
Cured bacon is still raw pork until it is cooked, so cook it until it is crisp. The target temperatures for chops, roasts and other pork cuts are in what temp is pork done, and the spoilage signs for the rest of the pig are in how to tell if pork is bad.
Raw bacon follows the same counter rule as any other raw meat: more than 2 hours out of refrigeration, or 1 hour above 90°F, and it goes in the bin. Between 40°F and 140°F, bacteria can double in as little as 20 minutes, and some produce toxins that cooking does not destroy.
If you buy bacon in bulk, split it into portions and freeze what you will not use inside the week. Wrap tightly and date each bag, then use it within 1 month for the best flavour. The broader rules for frozen meat are in how long can you freeze meat.
The Bottom Line
Raw bacon gets 1 week in the fridge and keeps its best quality for 1 month in the freezer. Sour smell, slime, grey or green lean, or a puffed package means it is spoiled. Yellow, stale-smelling fat means it has gone rancid and will taste that way.
Frequently Asked Questions
How long does opened bacon last in the fridge?
FoodSafety.gov gives raw bacon 1 week in the refrigerator and does not list a separate opened time. Use it within that week and do not go past the package date.
Can you cook bacon that smells a little off?
No. A sour or ammonia-like smell is a spoilage sign, and cooking will not remove toxins some bacteria leave behind.
Is slimy bacon safe?
Slime on raw bacon is a spoilage sign, so throw it out. A little surface moisture is normal; a film that coats your fingers is the problem.
How long does cooked bacon last?
The chart has no entry for cooked bacon. Its general line for cooked meat leftovers is 3 to 4 days in the fridge, so refrigerate cooked strips within 2 hours and use them inside that window.
Related Guides
- How to Tell if Pork Is Bad
- How to Tell if Sausage Is Bad
- What Temp Is Pork Done?
- How Long Does Smoked Meat Last?
Never Throw Out Good Meat Again
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