Can molasses go bad?

In this brief article, we will answer the question can molasses go bad and three ways of identifying bad molasses

Can molasses go bad?

Yes, molasses can go bad but it takes quite some time for it to happen. Often molasses goes bad by mold or fungal attack and it starts to smell bad with altered taste.

Molasses are viscous products that are formed after the refining of sugarcane or sugar beets into sugar. It varies in the amount of sugar due to age of the sugarcane plant, method of extraction, and raw materials.

Does blackstrap molasses go bad?

Yes, the most popular form of molasses or blackstrap molasses is also prone to spoilage. The shelf life of blackstrap molasses depends on how it was stored. Refrigerated and unopened cans can last up to 2 years, while opened ones may last for 6 months before they start going bad.

What is the shelf life of blackstrap molasses?

Storage conditionShelf Life
Unopened, sealed, refrigerated10+ years
Opened, refrigerated, resealed after useUpto 5 years

How to store molasses?

You can store molasses in an airtight container or its original container. Keep this container in a cool and dark place and away from the stove or any heat. You can also store molasses in the refrigerator during hot temperatures.

Can expired molasses make you sick?

Yes, expired molasses can make you sick. Past the expiration date molasses can have spots of bacteria growing on it that are hard to spot. If you consume such molasses, then it may lead to an upset stomach or even food poisoning.

Nutritional value of Molasses:

As molasses are made of sugar, it is really sweet in taste and rich in nutrition. In one serving of molasses the minerals like copper, magnesium, calcium is available alongside vitamins like vitamin B-6. It is rich in carbohydrates as well.

Molasses is the byproduct of sugar production and rich in mineral content. It provides selenium, iron, calcium, potassium, and copper. As it is derived from raw sugar it provides almost 70 grams of carbohydrates.

Sugar vs Molasses:

Molasses are a by-product of the sugar refining process and made of the same carbohydrates from which sugar is made. But many people still prefer molasses over sugar due to its low glycemic index. It is a conventional sweetener and does not spike blood glucose level upon consumption.

Health benefits of molasses:

Molasses have many health benefits other than having low glycemic index, as it is rich in nutrients it is used for its health benefits. Some of the health benefits of molasses are:

  • It is a good source of mineral like selenium, iron, and copper due to which it helps in maintaining bone health. It is also rich in calcium which plays major role in improving bone health
  • Molasses also provide potassium, which is good to keep the heart healthy and maintain blood pressure.
  • Some studies also show that adding molasses in daily diet increases the good cholesterol or HDL in body
  • Blackstrap molasses has antioxidants in it which help prevents diseases and protects cell from oxidative stress

Shelf life of molasses:

Molasses are very stable if properly stored in a good environment, and suitable conditions. Molasses have shelf life of up to 10 years and stay safe from spoilage. Molasses have no quality change for a long time and are consumable months after expiration date.

Its expiration date is based on the commercial estimate, and may not be valid if you store molasses in good conditions. If there is an expiration date on the label but you have stored the molasses properly; it is not necessary to throw it then. Until unless it turns bad or looks spoiled.

A molasses with no expiration date on its label is quite safe till two years after manufacturing date. This is in the case of unopened bottled, in case the bottle is open you should use the product for 1 year. It is not safe to use a spoiled product.

Other FAQs about Molasses which you may be interested in.

How to tell If molasses is bad?

Does Molasses go bad?

Can molasses be substituted for honey?

How to store molasses:

Molasses are natural sweeteners and used for the purpose of sweetening a product. Its storage condition is the same as other liquid sweeteners, like maple syrup and honey. It is kept in a cool and dry place with no direct exposure to sunlight.

Molasses have a long shelf life naturally, as sugar is a natural preservative. It is still best to properly store molasses to ensure maximum safety and longer shelf life. Some tips to store molasses are given below:

Storage conditions:

Molasses are stored in a proper storage that is dry, dark and cold. It remains safe in proper storage, and its shelf life increases to more than 2 years if it is stored properly. The best place to store molasses is the kitchen pantry which is free from insects and has no direct light exposure.


Molasses are stored in glass bottles with proper packaging or in any air tight container. It is best to keep it sealed when not in use and keep it away from heat. Unopened molasses stays safe from any spoiling conditions if stored properly.

Refrigeration of molasses:

Molasses are sticky, viscous liquid which is best stored at a cool place. But not as cool as refrigerators, it is best stored in a pantry. Refrigerating molasses makes it more viscous and sticky. It may extend the shelf life but it is not necessary.

How to identify bad molasses:

Molasses can go bad if not stored properly, some signs of molasses going bad or expired molasses are:

  1. Unlike honey, molasses can develop mold, one sign of bad molasses is spots of mold on it
  2. Molasses start to develop an unpleasant taste when it spoils. This flavor is easily identifiable if you regularly consume molasses
  3. There is an off odor of molasses when it expires, one way to identify is by sniffing new bottles of molasses and old bottles.


In this brief article, we have answered the question can molasses go bad and explained three ways of identifying bad molasses