USDA FoodKeeper – Cold Storage Guidelines
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperStorage conditions, initial freshness, and proper handling change the answer — and those details are easy to miss.
Last reviewed: January 2026
Reviewed by the Can I Eat Expired Editorial Team using official USDA, FDA, and CDC food safety guidance. How we assess food safety risk


This food is often safe when handled and stored properly, but safety depends on how it's been kept and whether any spoilage signs are present.
⏱️ Safe for up to 7 days after expiry if properly stored and showing no spoilage signs.
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Fridge
35-40°F (2-4°C)
Keep refrigerated, store upright, don't shake unnecessarily
After opening, beverages can lose carbonation or absorb odors. Transferring to an airtight bottle or container (Amazon) can help preserve freshness and flavor.
14 days
Vinegar-like smell, mold on surface, excessive sediment
Use as vinegar substitute when expired
Sparkling probiotic drinks, fermented tea
Kombucha does not have a strict expiration date like perishable foods. Instead, it has a 'best by' date, which indicates the period during which the drink is expected to retain its optimal flavor and quality. Over time, kombucha may continue to ferment in the bottle, leading to increased carbonation and acidity. While kombucha may still be safe to consume after the 'best by' date, the taste and quality may deteriorate. It's recommended to consume kombucha within a few months of purchase for the best flavor experience.
To check if Kombucha has gone bad, look for mold growth on the surface, a fizzy or vinegar-like smell, or a slimy texture. If you notice any of these signs, it's best to discard the Kombucha to avoid consuming spoiled product.
Kombucha is a fermented tea drink made by combining tea, sugar, and a symbiotic culture of bacteria and yeast (SCOBY). While kombucha is generally safe to consume, there are some potential risks associated with homebrewed kombucha if not prepared properly. The main risk is contamination from harmful bacteria or mold, which can lead to foodborne illnesses. To minimize these risks, it's important to ensure proper sanitation of equipment, use sterile containers, and monitor the fermentation process closely. People with compromised immune systems, pregnant women, and young children should be cautious when consuming kombucha.
To store kombucha properly and maintain its quality, it is best to keep it refrigerated at all times, even before opening. Refrigeration slows down the fermentation process, helping to preserve the flavor and carbonation of the drink. Once opened, tightly seal the bottle or container to prevent excess carbonation loss and contamination. Avoid exposing kombucha to direct sunlight or extreme temperatures, as this can affect its taste and quality. It's also recommended to consume the drink within a few days of opening for the best taste experience.
Kombucha has a long history and is believed to have originated in Northeast China around 220 BCE. It has been consumed for centuries in various cultures for its potential health benefits, including probiotics and antioxidants. In some cultures, kombucha is considered a traditional remedy for digestive issues and overall well-being. The drink has gained popularity in recent years for its unique tangy flavor and potential health properties, leading to a wide variety of commercial brands and flavors available in the market.
If Kombucha has been left at room temperature for 24 hours, it's best to discard it to prevent any potential food safety risks. Bacteria can grow rapidly at room temperature, increasing the likelihood of spoilage and contamination.
Kombucha can typically last longer in a glass container compared to a plastic one due to better insulation from light and air. Glass containers are non-reactive and do not leach chemicals into the beverage, preserving its quality for a longer period.
It's generally safe to store Kombucha next to dairy products in the fridge as long as they are sealed properly to prevent cross-contamination. However, it's recommended to keep them in separate areas to maintain optimal freshness and prevent any potential flavor transfer.
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 ExtensionImportant: These are general guidelines based on authoritative sources listed above. Always use your best judgment and when in doubt, throw it out.
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