Eating honey past its printed expiration date is almost certainly safe. Honey is one of the most shelf-stable foods in existence, and that “best by” date on the jar refers to quality, not safety. Archaeologists have found pots of honey in Egyptian tombs, thousands of years old, that were still preserved. The short answer: expired honey won’t make you sick, but it may not taste as good as it once did.
Why Honey Doesn’t Really Expire
Honey’s natural chemistry makes it incredibly hostile to bacteria and mold. A typical jar has a water content around 15%, a pH of about 4.2, and a sugar content of roughly 83%. That combination creates an environment where microorganisms simply can’t survive. The acidity kills most bacteria on contact, while the extremely low moisture and high sugar concentration pull water out of any microbial cells that try to grow, effectively dehydrating them to death.
Raw honey also contains organic acids, antimicrobial peptides, and enzymes that actively fight bacterial growth. These properties can diminish over time, especially if honey has been heavily processed or heated, but the basic physics of sugar and water content keep even old honey safe to eat.
What That “Best By” Date Actually Means
The date stamped on a honey jar is a quality indicator, not a safety deadline. Manufacturers use it to tell you how long the honey will maintain its original flavor, color, and texture. Over months and years, honey gradually darkens, loses some of its floral aroma, and may develop a slightly different taste. None of these changes make it dangerous. For specialty honeys like Manuka, the date reflects how long the producer can verify specific naturally occurring compounds remain at labeled levels.
The One Real Change: Crystallization
The most common thing you’ll notice in older honey is crystallization. The honey turns cloudy, thick, and grainy, sometimes separating into a dense bottom layer and a thinner liquid on top. This is completely normal and has nothing to do with spoilage. Crystallized honey looks lighter than the original liquid but smells exactly the same: floral, sweet, and natural.
You can reverse crystallization by placing the jar in warm water (not boiling) and stirring occasionally until it liquefies again. Or just eat it as-is. Crystallized honey spreads well on toast and dissolves fine in tea.
When Honey Can Actually Go Bad
Honey can spoil under one specific condition: when its moisture content rises high enough to support fermentation. Honey with 17% moisture or less will not ferment under normal circumstances. Once moisture climbs above 18-19%, naturally present yeast spores can activate and begin fermenting the sugars. The result is honey that tastes sour or alcoholic, smells off, and may have a foamy or bubbly appearance.
This happens when honey is stored in an unsealed container, especially in a humid environment. Honey is hygroscopic, meaning it pulls moisture from the air. A jar left open in a humid kitchen can gradually absorb enough water to cross the fermentation threshold. Poorly processed honey that was harvested before it was fully cured by the bees can also have moisture levels above 20%, making it prone to spoiling faster.
Fermented honey won’t poison you, but it tastes unpleasant. If your honey smells like alcohol or has visible foam, it’s best to toss it. Spoiled honey looks and smells completely different from crystallized honey, so the distinction is easy to make.
How to Store Honey for Maximum Shelf Life
Keep honey in a tightly sealed container at room temperature. The ideal range is about 50°F to 80°F, with a sweet spot around 65-70°F for everyday pantry storage. Avoid storing it near the stove or in direct sunlight, as heat accelerates changes in color and flavor. You don’t need to refrigerate honey. In fact, refrigeration speeds up crystallization without offering any safety benefit.
The seal matters more than the temperature. As long as moisture can’t get in, honey stays stable essentially indefinitely.
One Important Exception: Infants
Honey of any age, expired or fresh, should never be given to children under 12 months. Honey can contain spores of the bacterium that causes botulism. Adult digestive systems handle these spores easily, but an infant’s gut isn’t mature enough to prevent the spores from growing and producing toxin. This applies to all honey regardless of its expiration date, and the CDC recommends not adding honey to baby food, water, formula, or pacifiers.
A Rare Risk Worth Knowing About
There is one type of honey that can make anyone sick regardless of freshness. “Mad honey” comes from bees that forage on rhododendron nectar, which contains a natural toxin. Symptoms include nausea, vomiting, dangerously low blood pressure, and slowed heart rate, sometimes from as little as a tablespoon. This is rare and mostly associated with honey from Turkey’s Black Sea region, though the plants grow in parts of the United States as well. Symptoms typically appear quickly and resolve within 24 hours. This risk has nothing to do with expiration, but it’s the one scenario where honey itself can be genuinely toxic.