USDA FoodKeeper – Cold Storage Guidelines
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperCrisp, refreshing, and a staple in salads, this leafy green delights taste buds while adding crunch to meals. Properly storing it in the fridge can extend its vibrant life to about a week, but keep an eye on its freshness—consuming it within two days post-expiry helps avoid any unwanted surprises!
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"According to USDA guidelines, lettuce should be refrigerated at 40°F or below and consumed within 1 to 2 weeks for optimal quality and safety."


Fridge
4°C (40°F)
Store in breathable bag with paper towel
7 days
Slimy texture, brown edges, strong smell
Use in soups or smoothies if wilting
Spinach, kale
The expiration date on lettuce typically refers to the point at which it may start to spoil or become unsafe to eat due to bacterial contamination. On the other hand, the best quality of lettuce is when it is at its peak freshness, taste, and crispness. While lettuce may still be safe to consume after the expiration date if properly stored, its quality may deteriorate, with wilting and loss of flavor. It is best to consume lettuce before the expiration date for the best taste and texture.
To check if lettuce has gone bad, look for wilted, slimy, or discolored leaves. Smell the lettuce for any off-putting odors, indicating spoilage. Lastly, gently touch the leaves to feel for a slimy or mushy texture, which can also signal that the lettuce is no longer fresh.
Lettuce, like many leafy greens, can be a common source of foodborne illness if not handled and stored properly. The main risk comes from contamination with bacteria such as E. coli, Salmonella, or Listeria. To minimize these risks, it is important to wash lettuce thoroughly before consumption, especially if it will be eaten raw. Avoid cross-contamination by keeping lettuce away from raw meat, poultry, or seafood. Additionally, make sure to refrigerate lettuce promptly and at the correct temperature to slow bacterial growth.
To maximize the shelf life of lettuce, it is best to store it in the refrigerator in a perforated plastic bag or airtight container to maintain humidity while allowing airflow. Avoid washing lettuce before storing it, as excess moisture can cause it to spoil faster. If you notice any wilted or slimy leaves, remove them before storing to prevent the spread of spoilage. For a crispier texture, you can revive wilted lettuce by soaking it in ice water for a few minutes before consuming. Additionally, storing lettuce away from ethylene-producing fruits like apples and bananas can help prolong its freshness.
Lettuce has been cultivated for over 4500 years and has a rich history in various cultures. It is believed to have originated in ancient Egypt and was considered a sacred plant. In ancient Greece, lettuce was associated with the god of fertility, and in ancient Rome, it was a symbol of prosperity and love. Lettuce is widely used in salads, sandwiches, wraps, and even cooked dishes in cuisines around the world. There are different types of lettuce, including iceberg, romaine, and leaf lettuce, each with its own unique flavor and texture.
It's not recommended to store Lettuce next to raw meat in the fridge to prevent cross-contamination. Raw meat can contain harmful bacteria that may transfer to the Lettuce, increasing the risk of foodborne illness. Keep Lettuce in a separate compartment or drawer away from raw meat.
Once you open a bag of Lettuce, it's best to consume it within 2-3 days for optimal freshness and safety. After this period, the Lettuce may start to wilt or show signs of spoilage. If you notice any unusual odors, sliminess, or discoloration, it's safer to discard it.
The type of container can impact the shelf life of Lettuce. Opt for breathable containers or perforated bags that allow some airflow to prevent moisture buildup, which can lead to quicker spoilage. Avoid storing Lettuce in airtight containers as it can cause wilting.
Cooking Lettuce can alter its texture and flavor but doesn't necessarily extend its shelf life. Once Lettuce is cooked, it should be consumed promptly or refrigerated within 2 hours to prevent bacterial growth. Cooked Lettuce typically lasts in the fridge for 2-3 days.
While different brands may have varying packaging and storage methods, the shelf life of Lettuce is primarily determined by its freshness at the time of purchase. Follow the expiration date on the package and store the Lettuce properly in the fridge to maximize its shelf life.
When transporting Lettuce for a road trip, pack it in a cooler with ice packs to maintain a cool temperature and prevent wilting. Avoid leaving Lettuce in a hot car for extended periods as it can lead to rapid spoilage. Upon reaching your destination, promptly refrigerate the Lettuce.
Lettuce tends to last longer in cooler temperatures, such as winter, compared to hot summer months. High temperatures can accelerate wilting and spoilage of Lettuce. To extend the shelf life of Lettuce in summer, store it in the coolest part of the fridge and consume it promptly.
If Lettuce has been left at room temperature for 6 hours, it's best to discard it to avoid the risk of foodborne illness. Bacteria can multiply rapidly at room temperature, leading to potential contamination. To ensure food safety, always store Lettuce in the fridge when not in use.
30 most common foods with instant answers. Print it and stick it on your fridge—completely free! Want more? Upgrade to the complete guide with 70+ foods.
Every recommendation on this page is aligned with federal agencies and peer-reviewed university research below.
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperField-to-fridge handling practices that prevent contamination of fruits, vegetables, and leafy greens.
Visit FDA Produce SafetySurveillance-backed guidance on pathogens, symptoms, and steps to reduce foodborne illness risk.
Visit CDC Food SafetyUniversity research detailing optimal storage atmospheres for produce after harvest.
Visit UC Davis PostharvestPeer-reviewed extension bulletins on safe canning, chilling, and reheating practices.
Visit Penn State ExtensionNeed deeper reading? Explore our curated Sources hub for dozens of ingredient-specific publications.
Scan your food directly and get instant safety info using our AI-powered camera feature.
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Important: These are general guidelines based on authoritative sources listed above. Always use your best judgment and when in doubt, throw it out. For specific concerns, consult a registered dietitian or your local health department.