Does Coffee Go Bad?

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If you’re a coffee enthusiast, there are two important things you should be aware of before making a purchase.

The first thing is that coffee is very perishable.

You should always keep your coffee in a cool place.

If you have a cold room or fridge, you can keep your coffee inside for up to three months.

Coffee will also last longer when stored in a dark cupboard rather than exposed to sunlight.

Secondly, coffee does not go bad as soon as it’s opened.

It can become stale, though, so don’t use it until at least six weeks after opening.

Does Coffee Go Bad? 2

Does coffee go bad if its left out?

It depends on the type of coffee that you drink.

While some coffees will get stale faster than others, most of them will still taste good after a few days.

However, just like any other food item, coffee can spoil due to various factors.

Some of these factors include time, temperature, light, humidity, and oxygen.

So, if you want to store your coffee in a safe way, make sure that you follow these tips below.


The best way to preserve your coffee is by keeping it in a cool, dry place.

The ideal temperature for storing coffee is between 50 and 60 degrees Fahrenheit (10-15 degrees Celsius).

As mentioned earlier, coffee can be kept in a refrigerator for about three months.

However, if you plan on using it within this period, you should take it out every day and let it warm at room temperature for five minutes before consuming it.


You should never leave your coffee outside in direct sunlight because it can cause it to lose its flavor.

Instead, keep it in a cool and dark place where the temperature doesn’t exceed 86 degrees Fahrenheit (30 degrees Celsius).

In addition, if you want to extend the shelf life of your coffee, you can store it in an airtight container.

This is especially true if you plan on leaving your coffee in a hot car for more than two hours.


To avoid spoiling your coffee, you should keep it away from direct sunlight.

Although it may seem counterintuitive, coffee will actually lose its flavor if it gets too much light exposure.

Also, if you want to extend the shelf life of your coffee, you should cover it with aluminum foil.

In fact, you should only use foil if you plan on leaving your coffee in a hot car for more than 30 minutes.


Coffee beans contain natural oils that provide moisture to the brew.

If you want to prevent your coffee from getting moldy, you should keep it away from humid places such as bathrooms and kitchens.

Also, if you plan on storing your coffee in a closed cabinet, make sure that it’s well sealed to avoid any leaks.


Although you shouldn’t leave your coffee in a closed cabinet for extended periods of time, you should always try to open your cabinets regularly to ensure that they stay free of dust and insects.

If you have a lot of space, you can even put your coffee in a large, dark container.

Just make sure that you seal the container tightly to avoid any leaks.


Now that we’ve gone over all the ways that you can ruin your coffee, you should be able to figure out whether or not you should keep your coffee around for a while.


Does coffee go bad if its not refrigerated?

Coffee goes bad when the water evaporates from the grounds.

This causes the coffee to lose its flavor and aroma.

The best way to prevent this is by keeping your coffee fresh.

If you want to drink good quality coffee, you should store it in an airtight container to avoid exposure to light, heat, and moisture.

However, storing coffee in an airtight container won’t stop it from going bad.

This is because the air in the container will still be able to pass through the porous material of the coffee beans.

To make sure that your coffee doesn’t go bad, you should put it in the refrigerator.

If you do not have access to a refrigerator, then you can try freezing your coffee instead.

However, this method may cause the coffee to lose some of its flavor and aroma.

For example, freeze-dried coffee has a strong taste compared to regular ground coffee.

In fact, according to research conducted by the University of Guelph, only about half of the caffeine content remains in freeze-dried coffee after 12 months of storage.

To ensure that your coffee lasts longer, you should buy it in bulk.

This way, you can store it for up to several years without worrying about whether it will go bad.

You can also buy coffee in vacuum sealed bags.

These bags are designed to keep the coffee fresh even when they are left out on the countertop.

When you open the bag, you should replace the air inside with nitrogen gas.

This will help to preserve the coffee’s aroma and flavor.

How long does coffee last?

Coffee goes bad because it has lost its aroma, taste, and color.

The process starts immediately after brewing, and the faster it spoils, the worse it tastes.

So, if you want to drink your favorite coffee, make sure you brew it fresh and consume it within five days.

In fact, according to the USDA, coffee loses about 20 percent of its quality every day once it’s brewed.

And while coffee doesn’t spoil quickly, you still need to store it properly to avoid losing its flavor.

That’s why it’s important to store your coffee in a refrigerator or freezer instead of keeping it on a countertop.

When you open a new carton of coffee, pour it into your mug, and take a sip right away, you may be able to enjoy some good-quality coffee.

However, after a few hours, the coffee will start to lose its flavor.

By the next day, the coffee will be stale and bitter.

Once coffee is opened, it should be consumed within seven days.

But what happens if you forget to finish your coffee in time?

What happens to coffee once it’s opened?

There are several ways that coffee can lose its flavor over time.

For instance, coffee beans can begin to grow mold if they aren’t kept properly.

This causes the coffee to lose its aroma and flavor.

As another example, coffee can get rancid from exposure to light and heat.

When this happens, the coffee becomes sour and stinky.

These changes happen instantly, and they can only be undone by throwing out the coffee and buying a fresh batch.

Another factor that affects the shelf life of coffee is the temperature.

If you store coffee at room temperature, it will go stale much faster.

In fact, coffee can lose half of its flavor in just 24 hours at room temperature.

On the other hand, storing coffee in the refrigerator or freezer extends its shelf life.

If you put your coffee in the fridge, it can stay fresh for up to 10 days.

If you freeze your coffee, it will last even longer.

What are the signs that coffee has gone bad?

If you think that your coffee has gone bad, then you probably experienced one or more of the following symptoms:

These are all classic signs of rancid or spoiled food.

However, these symptoms are often caused by other factors too, such as mold growth, which we will discuss later in this article.

Can you still drink coffee that has gone bad?

Coffee does not go bad as soon as you open the container.

It may start to taste old, however, and this is why you shouldn’t drink it too early.

This is because coffee starts losing its freshness as soon as it’s brewed.

The longer you brew it, the more bitter it becomes.

You might think that you can just pour some coffee into a mug and enjoy it straight away.

However, this is not advisable.

When coffee goes stale, it tends to be bitter and acidic, which makes it unpleasant to drink.

Although you can drink it straight from the jar, you should always make sure that you have used up all the liquid before doing this.

A full pot of coffee contains around 250ml (9fl oz) of liquid, while a standard mug holds around 150ml (5fl oz).

So, if you want to drink a whole pot of coffee, you should plan ahead and either make a large pot of coffee or save some time by brewing multiple cups.

Another reason why coffee goes bad is that it doesn’t stay fresh for long.

Once the coffee beans have been ground, they start going off quickly.

Even if you buy freshly roasted coffee beans, they will only last for around three days.

After that, the coffee loses its aroma and begins to smell stale.

This means that it’s best to drink it within the first few days of purchase.

If you want to store coffee for longer, try freezing it instead.

Freezing coffee turns it into an ice cream-like substance, which keeps it fresh for up to six months.

What happens if you drink coffee that has gone bad?

Coffee is made from beans which contain natural oils and sugars.

As these are processed into coffee, they will begin to degrade over time.

This process starts almost immediately after the beans are roasted.

The roasting process brings out the coffee’s aroma and flavor, but it also causes the chemicals present in the beans to break down.

This leaves behind compounds called ‘volatile organic compounds (VOCs)’.

These VOCs cause coffee to smell stale and taste bitter.

As the coffee continues to age, more volatile organic compounds will be released.

Eventually, this will result in coffee becoming completely unappealing.

However, not all coffees go bad at the same rate.

Some coffees will stay fresh for several years while others may only last a few days.

For instance, Nespresso coffee pods are designed to be used within 90 days of purchase.

After that, the coffee will start to go off.

Although some coffees go bad faster than others, the vast majority will last much longer.

In fact, some coffees will last for decades.

So, what happens if you drink coffee that has gone bad?

Is it safe to drink coffee that has gone bad?

Coffee does not go bad, as such.

Rather, it loses its taste and aroma over time.

This is because the chemical compounds that give coffee its flavor and aroma break down over time.

The breakdown process is known as oxidation.

Oxidation occurs naturally in coffee beans.

When the beans are roasted, they release volatile chemicals into the air.

These chemicals react with oxygen in the air to create new molecules.

Some of these new molecules are good for coffee.

For example, some of them contribute to the flavor of coffee.

Others contribute to its aroma.

But some of the new molecules are bad for coffee.

One of these is carbon dioxide.

As the coffee oxidizes, carbon dioxide is released from the coffee.

Carbon dioxide is an odorless gas, so it doesn’t affect the flavor of the coffee.

However, it does make the coffee smell sour.

So if you want to save money by buying cheap coffee, you might want to avoid this problem.

Another molecule that causes coffee to go bad is acetic acid.

Acetic acid is another odorless gas.

Like carbon dioxide, it contributes nothing to the flavor of the coffee.

Its only purpose is to ruin the coffee’s aroma.

As the coffee oxidizes, acetic acid reacts with other molecules to form acetaldehyde, which smells like vinegar.

Acetaldehyde is responsible for many of the unpleasant odors associated with old coffee.

It’s also responsible for coffee losing its flavor.

Over time, the acetaldehyde breaks down too, leaving the coffee smelling like vinegar again.

So what happens to coffee when it goes bad?

What do you do with coffee that has gone bad?

Coffee that has gone bad will still be drinkable if you grind the beans into a powder and re-use them.

The taste will be slightly different from fresh coffee, but you should be able to get away with this for some time.

You cannot re-brew coffee that has gone bad.

This means that you should throw out the coffee once it smells sour or has a strong moldy smell.

However, if you want to save some money, you can try making coffee using only the grounds from previous batches.

This will give you a decent amount of coffee without spending too much on new beans.

Make sure you store your coffee in a sealed container to prevent any more air getting into the grounds.

You can even make a simple coffee grinder that will allow you to grind your own coffee.

Storing coffee

There are a few ways that you can store your coffee until it goes off.

Firstly, you can freeze it in an airtight jar to stop it going rancid.

Secondly, you can put it in a large plastic bag and freeze it.

Thirdly, you can wrap the coffee in aluminum foil and store it in the freezer.

These methods all work well, but they take a lot of space.

Pour it down the sink

One of the best ways to dispose of old coffee is to pour it down the sink.

This method will remove most of the water and help to preserve the coffee a little better.

When you pour the coffee down the sink, you should fill the sink about half full of hot water.

Then add the coffee and stir until it has dissolved.

Next, drain the sink and rinse it with clean water.

Finally, run the sink under cold water to get rid of any remaining coffee particles.

Once the sink is empty, you can wipe it down with soap and warm water.

Can coffee be frozen?

Coffee beans contain caffeine which is an alkaloid that has the ability to prevent bacteria from growing in the bean.

This means that as long as you keep the coffee beans in their original packaging, they won’t spoil.
However, the same cannot be said about the liquid in the container.

When coffee is frozen, the water molecules expand and break down the structure of the coffee.

This causes the coffee to lose its aroma, taste, and color.

It is possible to freeze coffee, but only if you use special equipment.

The best way to do this is using a vacuum pump.

This allows the air to be removed from the container, preventing oxygen from entering the container, thus preventing oxidation.

Even when the coffee is frozen, it still contains caffeine, so it’s best to drink the coffee immediately after thawing.

However, once the coffee has been frozen, it can be kept for several months.

Coffee Macarons Recipe

Coffee Macarons Recipe

Macarons are small, delicate cookies made from almond flour that have been baked and decorated.
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Course Dessert
Cuisine American
Servings 5
Calories 612 kcal


  • 212 g almond flour
  • 212 g powdered sugar
  • 172 g egg whites
  • 1 tbsp sugar granulated
  • 1 tbsp instant coffee
  • 236 g granulated sugar
  • 158 g water


  • Prep Your Ingredients and Equipment to Make These Coffee Macarons
  • Sift Your Dry Ingredients
  • Make French Meringue
  • Mix the Dry Ingredients into The Meringue
  • Pipe the Macaron Shells
  • Rest Your Piped Macaron Shells
  • Bake the Chocolate Macaron Shells
  • Assembling These Coffee Macarons



Calories: 612kcalCarbohydrates: 101gProtein: 13gFat: 21gSaturated Fat: 1gSodium: 60mgPotassium: 59mgFiber: 4gSugar: 94gCalcium: 93mgIron: 2mg
Keyword Coffee Macarons Recipe
Tried this recipe?Let us know how it was!

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