“Honey does not spoil over time under normal storage conditions.”

The findings suggest that storing pine, flower, and thyme honey in light- or dark-colored glass jars or tin cans for 12 months does not significantly impact these properties [moisture, pH, electrical conductivity, proline content, diastase number, sugar, HMF, TPC, TAS, TOS, OSI, or catalase activity levels]. Honeys were tightly closed to prevent contact with air and stored in a dark environment at room temperature (20–25 °C) until analysis.

Honey's remarkable antimicrobial properties are derived from a combination of physical, chemical, and biochemical mechanisms that synergize to inhibit microbial growth and survival. Its high sugar concentration, low water activity, and acidic pH create an environment that is hostile to most pathogens. Honey's enzymatic activity also produces hydrogen peroxide and other bioactive compounds, such as methylglyoxal and polyphenols, which exhibit potent antimicrobial effects.

Raw honey — with intact enzymes and other beneficial compounds — is minimally processed and can last 'forever' if stored in a sealed container. According to one study, the sensory and chemical properties of honey are best preserved when stored at 75 degrees Fahrenheit (24 degrees Celsius), or around room temperature.

Honey's acidity is a key factor in its remarkable shelf stability. The low pH creates an environment where most bacteria and microorganisms cannot survive. Combined with honey's low water activity and hydrogen peroxide content, this acidity explains why archaeological discoveries have found edible honey in ancient Egyptian tombs. Most honeys fall between 3.4 and 6.1 on this scale, with an average around 3.9.

The recommended storage temperature for unprocessed honey is below 50 °F (10 °C). The ideal temperature for both unprocessed and processed honey is below 32 °F (0 °C). Processed honey should be stored between 64–75 °F (18–24 °C). Honey can be exposed to higher temperatures for brief periods; however, heat damage is cumulative so heat exposure should be limited.

As long as your honey is sitting sealed on a shelf, it can stay good forever — which explains how scientists have found honey in dry Egyptian tombs that is still good to eat! The natural process by which honey bees produce honey drastically reduces its water content, to the point that nothing (not even yeast) can survive long enough within it to go rancid.

The two primary factors that damage honey during storage are heat and moisture. These elements degrade the honey's delicate flavor, aroma, and beneficial properties. Honey's low water content (typically below 18%) and high sugar concentration prevent bacteria and yeast from growing. However, if honey absorbs enough excess moisture, its water content can rise, allowing dormant yeast spores to activate and begin the fermentation process, spoiling the honey.

Pure honey, properly handled, will stay safe to eat indefinitely. However, there are a couple of scenarios that can cause honey to “go bad” – and they usually involve excess moisture or contamination. If water gets into honey (from humid storage or wet utensils), the water content can rise above 18%. This creates conditions where yeast can grow, leading to fermentation.

Enzymes like diastase are used by bees to turn nectar into honey. These enzymes continue to be active in the honey and degrade and become inactive over time and with heat. This is why CODEX uses diastase activity as an indication of honey freshness and heat treatment.

One of the greatest facts about honey is that it doesn’t spoil! However, honey is susceptible to physical and chemical changes over time. It can lose its aroma and flavor and it also tends to darken. Because the preservation of honey is dependent upon temperature, the shelf life of honey is difficult to define. For practical – and commercial – purposes, a shelf life of two years is often stated. Properly stored honey, though, retains its quality for much longer than that.

Honey is hygroscopic, meaning it contains very little water but can absorb moisture if left unsealed. This low-moisture, high-sugar environment prevents bacteria and microorganisms from surviving. With a pH between 3 and 4.5, honey is acidic. When bees collect nectar, they add an enzyme called glucose oxidase. This enzyme breaks nectar down into gluconic acid and hydrogen peroxide—both natural preservatives.

While honey has a long shelf life, it can spoil due to moisture, contamination, or poor storage conditions. Check for signs of spoilage before consuming, as older honey may lose its flavor and nutritional value.

While honey does not spoil in the traditional sense, it can undergo changes over time. These changes, such as crystallization or color darkening, do not indicate expiration but rather natural processes that occur due to its composition. However, if honey is exposed to moisture or contaminants, it may ferment or develop off-flavors, which could be perceived as spoilage.

Just to quickly name a few factors as to why honey has an eternal shelf life—its acidity, its lack of moisture and the presence of hydrogen peroxide—work in perfect harmony, allowing the sticky treat to last forever. Sugars are hygroscopic, meaning that contain very little water in their natural state but can suck moisture from the air when left unsealed. If left open in a humid environment, it will spoil. Because honey can such moisture from the environment it leaves itself vulnerable to bacteria.

While honey is an exceptionally stable and well-preserved food naturally, it does deteriorate with age over time in ambient storage. Organic compounds tend to denature over time, usually in a manner that is highly temperature dependent. This means that the polyphenols, flavonoids and bee enzymes that give raw honey both its unique flavor and health benefits are slowly degrading as the raw honey languishes in ambient temperature storage.

One of the essential reasons raw honey doesn't spoil lies in its exceptionally high sugar content. Honey is made up of roughly 80 percent sugar and only 20 percent water. This high sugar concentration creates a hostile environment for bacteria and microorganisms. Sugar is hygroscopic, meaning it naturally draws water from its surroundings. Any bacteria that end up inside honey succumb to dehydration almost instantly.

Honey contains very little water content (less than 18 percent moisture), so bacteria does not grow very easily in it. This is one reason it has such a long shelf life. Generally, a temperature between 65 and 80 degrees Fahrenheit is a good range.

Honey stands as nature's most remarkable preservative, capable of lasting thousands of years without spoiling. When archaeologists cracked open 2,000-year-old honey jars in Georgian tombs, they found that the honey looked, smelled, and tasted exactly like fresh honey from a modern store.

The water content of honey is a key factor in why it doesn't spoil. At 17%, its water content is much lower than that of bacteria or fungi. Honey has a water activity of 0.6, with most moulds and bacteria being unable to grow under a water activity of 0.75. Another factor that helps honey avoid spoiling is its acidity. Its average pH is around 4; this acidity is contributed to by a number of acids, including formic acid and citric acid, but the dominant acid is gluconic acid. Hydrogen peroxide is also produce by the production of gluconic acid – this too can inhibit the growth of bacteria.

Honey has a long shelf life due to its high sugar, low water content, and acidic pH, which prevent bacterial and fungal growth. Proper storage is crucial to maintaining honey’s quality; it should be kept in airtight containers at consistent temperatures between 50-70°F to avoid moisture contamination and degradation. Changes in honey’s color or texture, like darkening or crystallization, are natural and don’t mean it’s spoiled; it’s still safe to eat.

Raw honey can go bad if exposed to improper storage conditions, such as heat, moisture, or light, which can degrade its enzymes and antioxidants. Honey with higher moisture content, often due to environmental factors, is more susceptible to fermentation or spoilage if exposed to humid conditions or not stored properly.

Preferably, 72°. It isn't necessary to refrigerate honey. Honey stored below 65° will crystalize faster. Killer Bees Smoky Mountain Wildflower Honey, Summer Sweet Honey and Queen’s Reserve Sourwood Honey are best stored in a dark cabinet at room temperature.

Key Shelf Life Facts: Unopened mānuka honey: Typically remains stable for 3 - 5 years (and often longer) from the date of packaging. Opened mānuka honey: Can remain stable for 1 - 2 years (or longer) when stored correctly.

Archaeological evidence shows honey remaining edible after thousands of years in sealed tombs due to low water activity (aw ~0.6), high osmolarity, and antimicrobial compounds like hydrogen peroxide from glucose oxidase enzyme. Modern science confirms raw honey does not spoil under proper dry, sealed conditions but can ferment if diluted above 19% moisture.

Honey has been found in ancient tombs, perfectly preserved for thousands of years, proving its status as a natural marvel. But why exactly does honey never spoil? The secret lies in its unique chemical composition, which creates an environment that's inhospitable to bacteria and fungi.