The cookout is over and there’s coleslaw on the counter. Does it need to be put straight into the fridge, or can it be kept out for a while longer? And what about that bag of coleslaw mix you haven’t opened yet? Does coleslaw need to be refrigerated?
Short answer: Yes always. Both dressed coleslaw and undressed coleslaw mix should be kept refrigerated at all times. Coleslaw is a perishable food and the 2-hour room temperature rule strictly applies. There is no safe way to leave coleslaw sitting out.
For a complete overview of how the shelf life of fresh foods and spices compare, visit our complete food storage guide.
key takeaways
- Dressed coleslaw should always be refrigerated. It is a perishable ready-to-eat food as soon as it is prepared.
- The bagged coleslaw mixture should be refrigerated. Shredded cabbage and carrots are fresh produce that can be stored in the refrigerator.
- The 2 hour rule is not flexible. Coleslaw left at room temperature for more than 2 hours should be discarded. At temperatures above 90°F, that window drops to 1 hour.
- Mayo-based coleslaw is the most temperature-sensitive. Egg-based dressings aid rapid bacterial growth in hot conditions.
- Dressed coleslaw lasts for 3 to 5 days refrigerated. The unaged mixture lasts until its best by date.
Why does coleslaw always require refrigeration?
Coleslaw contains many perishable ingredients. Cabbage and carrots are fresh vegetables that will wilt, discolor, and eventually rot without refrigeration. Dressings, whether mayo-based or vinegar-based, contain ingredients that go rancid at room temperature. Mayo-based dressings contain egg yolks, which is of major concern: eggs are a high-risk food safety ingredient and the main reason mayo-based coleslaw should be taken as seriously as any egg-containing prepared food.
fda Let’s be clear on this point: Cooked and prepared foods containing perishable ingredients should not remain at room temperature for more than 2 hours. At temperatures above 90°F, such as at a summer outdoor cookout, the window drops to 1 hour. Bacteria, including Salmonella, grow rapidly in the danger zone between 40°F and 140°F, and coleslaw sitting in hot air attacks that zone quickly.
Coleslaw Mix: Refrigerate before and after opening
Bags on the counter are already a problem
The bagged coleslaw mix from the refrigerated section of the grocery store is sold for a reason. The shredding process breaks down the natural protective barriers of cabbage and carrots, increasing the surface area exposed to bacteria. Once harvested, these vegetables are significantly more perishable than a whole head of cabbage.
An unopened bag of coleslaw mix should go straight from the store to your refrigerator. Do not leave it on the counter even temporarily. Use according to the best by date printed on the bag, and always check for dilution or odor before using, even if it is well within the date.
Once opened, pour leftover mixture into an airtight container and use within 1 to 2 days. The original bag is not reliably sealable and moisture loss occurs rapidly after opening.
How long does refrigerated coleslaw last?
| Type | refrigerator shelf life |
|---|---|
| Bagged Coleslaw Mix (unopened) | use by best by date |
| Bagged Coleslaw Mix (opened) | 1 to 2 days in airtight container |
| Homemade Mayo-Based Coleslaw | 3 days best quality; maximum 4 days |
| Homemade Vinegar-Based Coleslaw | up to 5 days |
| Store-Bought Deli Coleslaw (Open) | 3 to 4 days |
Anticipate continuous refrigeration at a temperature of 40°F or below in a sealed airtight container at all times. compatible with usda foodkeeper Guidelines for preparing salad.
Serving Coleslaw Safely at Outdoor Events
cookout problem
Coleslaw is one of the most common causes of foodborne illness at outdoor events, as it remains exposed to hot air for hours as people eat, talk, and fill their plates. The 2 hour rule is the absolute limit at ambient temperatures up to 90°F. Above this you have 1 hour.
A practical approach to keeping coleslaw out safely: Serve coleslaw in a bowl placed inside a larger bowl filled with ice. This keeps coleslaw at a safe temperature even in hot weather and gives you a full service window without the risk of spoilage. Alternatively, keep the coleslaw in the cooler and pull it out in small batches, fresh from the cooler, rather than leaving a large bowl out constantly.
If coleslaw has been sitting on the cooktop for more than 2 hours, don’t put it in the refrigerator to eat later. Discard it. Bacteria that have multiplied during time spent at room temperature are not deactivated when coleslaw is returned to the refrigerator.
Best Storage Practices
How to store coleslaw correctly
Keep in the refrigerator immediately after making or purchasing. Don’t leave dressed coleslaw on the counter when you finish eating. Place it in the refrigerator within 2 hours, ideally sooner.
Use a sealed airtight container. A container with a tight-fitting lid keeps the coleslaw from absorbing refrigerator odors and keeps moisture from escaping from the vegetables faster than necessary.
Place back side on main shelf. The temperature fluctuates every time the refrigerator door is opened. The back of the main shelf stays the coldest. The coleslaw is there, not at the door.
See also
Set dressing aside while making ahead. If you are preparing coleslaw in advance, store the prepared cabbage mixture and dressing separately. Dress just before serving. Unpeeled shredded cabbage will remain crisp for 4 to 5 days when stored in a sealed container in the refrigerator.
Label the date. All dressed coleslaws look the same on the first and fourth days. The date written on the container prevents guessing when coleslaw that has been stored for too long can be eaten.
Never leave it at room temperature to soften or warm. There is no need to bring the coleslaw to room temperature before serving. It is designed to be served cold and eaten cold.
Recipes that use coleslaw
Frequently Asked Questions
Can coleslaw sit out for a few hours at a party?
Up to 2 hours at room temperature. At outdoor temperatures above 90°F, the limit is 1 hour. After this discard it. Serving it in a bowl over ice is the best way to prepare it for long parties. Do not put it back in the fridge to protect it after it has been out for more than 2 hours; The bacterial growth that occurs during that time is not reversed when refrigerated.
Does vinegar based coleslaw need to be refrigerated?
Yes. Vinegar is acidic and slows the growth of bacteria compared to mayo-based dressings, but it doesn’t completely prevent spoilage. Vinegar-based coleslaw still contains freshly cut vegetables that will rot at room temperature and the dressing will also spoil over time without refrigeration. Keep all coleslaw refrigerated. Vinegar-based slaws last a little longer in the fridge (up to 5 days versus 3 to 4 days for mayo-based) and not on the counter.
How do I keep coleslaw from getting watery in the fridge?
Salt draws moisture out of the cabbage over time, which is why coleslaw naturally becomes watery as it sits. To reduce this: Keep the dressing and shredded cabbage separately and mix just before serving. If coleslaw is already prepared, store in a sealed airtight container and drain off any accumulated liquid before serving. Some people cook salt and dry the shredded cabbage before dressing, which removes excess moisture beforehand and results in a less watery salad over time.
Further reading
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