Almond milk has become a popular dairy alternative, favored for its nutty flavor, low calorie count, and plant-based composition. But with its rising popularity comes a common and essential question: Does almond milk need to be refrigerated?

The answer isn’t as straightforward as it might seem. That’s because some almond milk products require refrigeration, while others can sit on your pantry shelf for weeks without issue—until they’re opened. Knowing the difference between shelf-stable and refrigerated almond milk is key to preventing spoilage and ensuring food safety.

In this article, we’ll break down exactly when almond milk should be kept cold, how long it lasts after opening, and what happens if it’s left out too long.

Types of Almond Milk and Their Storage Needs.

Before discussing refrigeration, it’s important to understand that not all almond milk is created equal. There are two primary categories available on the market:

1. Shelf-Stable Almond Milk

This version is packaged in aseptic cartons and is processed using ultra-high temperature (UHT) pasteurization. Brands like Almond Breeze, Silk, and many store labels offer this option.

• Does it need to be refrigerated?
  Not before opening. You can store it in your pantry until the printed expiration date.
• After opening?
  Yes, it must be refrigerated and used within 7 to 10 days.

2. Refrigerated Almond Milk

Found in the chilled dairy section, refrigerated almond milk is not shelf-stable and must be kept cold at all times.

• Does it need to be refrigerated?
  Yes, even before opening. Leaving it out at room temperature can lead to spoilage.
• After opening?
  Definitely yes, and it should be consumed within the time listed on the label, typically 7 days.

Does Almond Milk Need to Be Refrigerated After Opening?

Absolutely. No matter what type—shelf-stable or refrigerated—all almond milk should be refrigerated after it’s opened. Exposure to air introduces bacteria and can accelerate spoilage, especially in plant-based milks that lack preservatives.

If you’ve cracked open a carton, reseal it tightly and place it back in the fridge. Almond milk should be kept at or below 40°F (4°C), the standard safe temperature for perishable foods.

What Happens If You Don’t Refrigerate Almond Milk?

Leaving almond milk out—especially after opening—can cause it to spoil quickly. Even shelf-stable almond milk will begin to degrade rapidly once it’s exposed to air and warmer temperatures.

Signs Your Almond Milk Has Gone Bad:

• A sour smell or “off” odor
• A thick, clumpy texture
• Visible separation (some separation is normal, but a gelatinous or curdled consistency is not)
• Sour or bitter taste

If any of these are present, discard the almond milk immediately. Drinking spoiled almond milk can result in stomach upset, nausea, or foodborne illness.

Can You Drink Almond Milk If Not Refrigerated?

If the almond milk was unopened and shelf-stable, then yes—you can drink it if it’s within the expiration date and hasn’t been exposed to extreme heat. However, if it was refrigerated almond milk or an opened carton, then no, it’s not safe to drink if it’s been left out for more than two hours.

How Long Can Almond Milk Sit Out Unrefrigerated?

According to USDA food safety guidelines, perishable items should not be left at room temperature for more than 2 hours. Beyond that, bacterial growth may reach unsafe levels.

Time Limits:

• Opened almond milk (any type): Max 2 hours at room temperature
• Refrigerated almond milk (unopened): Should always stay cold
• Shelf-stable almond milk (unopened): Can sit out until the best-by date
• Almond milk left in a hot car: Even less than 2 hours can be risky due to elevated temperatures

If your almond milk has been left out overnight, play it safe and throw it out.

Does Almond Breeze Milk Need to Be Refrigerated?

It depends on which version you’ve purchased:

• Shelf-stable Almond Breeze (sold in cartons): No need to refrigerate until opened.
• Refrigerated Almond Breeze (sold in cold section): Must be refrigerated at all times, even before opening.

After opening, both types require refrigeration and should be used within 7 to 10 days.

Does Almond Milk Creamer Need to Be Refrigerated?

Yes, almond milk creamers must be refrigerated after opening. Even shelf-stable versions require cold storage once opened to prevent spoilage. Since creamers often contain added sugars or flavorings, they can degrade more quickly than plain almond milk.

Does Silk Dark Chocolate Almond Milk Need to Be Refrigerated?

Silk’s chocolate almond milk is often sold in both shelf-stable and refrigerated formats. Check the label:

• Shelf-stable version: Store at room temperature before opening, refrigerate after opening.
• Refrigerated version: Must be stored in the fridge from the time of purchase and after opening.

Regardless of type, Silk recommends consuming it within 7–10 days after opening for best quality.

Can You Leave Almond Milk Unrefrigerated Overnight?

If the almond milk was opened and left out overnight, it’s no longer safe to consume—even if it smells okay. Spoilage bacteria can grow without leaving obvious signs, and consuming it could lead to foodborne illness.

How to Store Almond Milk Properly?

Before Opening:

• Keep shelf-stable almond milk in a cool, dry place.
• Always refrigerate dairy-case almond milk immediately after purchase.

After Opening:

• Store in the fridge at or below 40°F.
• Keep the carton tightly sealed.
• Do not store near the fridge door, where temperature fluctuates more.
• Label the carton with the date it was opened, if not already marked.

Homemade Almond Milk: A Special Case

Homemade almond milk lacks the preservatives and pasteurization that commercial varieties undergo, so it spoils faster.

• Refrigeration is essential
• Consume within 3 to 5 days
• Store in an airtight container in the coldest part of the fridge

FAQs About Almond Milk and Refrigeration

Q1: Does almond milk need to be refrigerated before opening?

Only if it’s the refrigerated type. Shelf-stable almond milk can stay in the pantry until you’re ready to use it.

Q2: How long does almond milk last after opening?

Generally, 7 to 10 days in the refrigerator. Always check the label for manufacturer recommendations.

Q3: Can expired almond milk make you sick?

Yes. Spoiled almond milk can cause symptoms like nausea, vomiting, and stomach cramps. When in doubt, throw it out.

Q4: Why does almond milk need to be refrigerated after opening?

Once opened, the milk is exposed to air and potential bacteria, which can multiply quickly at room temperature. Refrigeration slows this process.

Q5: Is it okay to heat almond milk that has been refrigerated?

Yes. Reheating almond milk for use in coffee, tea, or recipes is safe. Just avoid boiling it to prevent curdling.

Conclusion: Should Almond Milk Be Refrigerated?

So, does almond milk need to be refrigerated? The answer depends on the type and whether it’s been opened. Shelf-stable almond milk is fine in the pantry until you break the seal. After that, all almond milk—regardless of brand or packaging—should be kept cold and consumed quickly.

To keep your almond milk fresh and safe:

• Always refrigerate after opening
• Use within 7–10 days
• Don’t consume if it smells, tastes, or looks off

With proper storage, almond milk can be a delicious and reliable part of your diet, whether it’s poured over cereal, blended into smoothies, or frothed into your morning latte.