How long will a smoothie last out of the fridge?

Smoothies make for a delicious and nutritious on-the-go breakfast or snack. They’re packed with fruit, vegetables, protein, and other good-for-you ingredients. But how long will a pre-made smoothie stay fresh if you take it out of the refrigerator to drink later? Here’s a look at how long smoothies last at room temperature or in the fridge, plus tips for making them last longer.

How Long Do Smoothies Last at Room Temperature?

The first thing to know is that smoothies will start to spoil and lose quality rapidly at room temperature. Here’s a general timeframe for how long pre-made smoothies will last unrefrigerated:

  • 1-2 hours: Smoothies with milk or yogurt will go bad fastest since dairy products spoil quickly at room temp. They’ll start to taste sour and curdle after sitting out for more than an hour or two.
  • 3-4 hours: Fruit and vegetable smoothies without dairy will last a little longer, but you should try to drink or refrigerate them within 3-4 hours for best quality.
  • 6-8 hours: Adding lemon juice to fruit smoothies can help them last up to 8 hours at room temperature due to the preservative effects of citric acid.

No matter what ingredients are in your smoothie, keeping it out at room temperature longer than 8 hours is risky. Bacteria grow rapidly in the danger zone between 40°F and 140°F. Smoothies kept in this range for too long can cause food poisoning.

How to Tell if a Smoothie is Bad at Room Temperature

Here are signs that indicate your smoothie has sat out too long and may not be safe to drink:

  • Change in texture: Becomes watery, starts separating, looks curdled
  • Change in smell: Smells sour or rancid
  • Change in color: Browning, graying, or dulling of vibrant colors
  • Mold growth: Fuzzy mold spots start to develop
  • Bubbles: Carbonation, fizzing, or foaming appears

Trust your senses – if a smoothie smells or looks off in any way after sitting out for more than 3-4 hours, it’s better to be safe and toss it out.

How Long Do Smoothies Last in the Fridge?

Refrigerating your smoothies is the best way to maximize freshness and shelf life. Here’s how long smoothies last when properly stored in the fridge:

Smoothie Type Fridge Life
Fruit and veggie smoothies 2-3 days
Smoothies with leafy greens 24 hours
Smoothies with dairy 1-2 days
Smoothies with protein powder 3-5 days

As you can see, smoothies with hardy ingredients like fruits, vegetables, and protein powders tend to last longer, while dairy products shorten fridge life. To extend the shelf life as long as possible, be sure to refrigerate smoothies immediately after making them – don’t leave them out at room temperature before chilling.

How to Tell if a Refrigerated Smoothie Has Gone Bad

Check refrigerated smoothies carefully before drinking for these signs of spoilage:

  • Liquid has separated and looks curdled or watery
  • Unappetizing odor – smells sour, rancid, moldy
  • Change in texture – slimy, mushy, grainy
  • Discoloration – dull, brownish coloring
  • Mold growth – fuzzy spots or cloudiness

Avoid tasting smoothies that show any of these warning signs. When in doubt, remember it’s better to be safe and toss out a spoiled smoothie.

Tips to Make Smoothies Last Longer

Here are some tips to maximize the shelf life of both refrigerated and unrefrigerated smoothies:

  • Use freezer-cold ingredients – Blending frozen fruit and chilled yogurt or milk makes smoothies ultra-cold to help them stay fresh.
  • Fill smoothies to the brim – Minimal air at the top means less oxidation.
  • Add lemon juice – The acidity helps inhibit bacterial growth, providing a natural preservative effect.
  • Store in airtight containers – Prevents contamination and keeps flavors intact.
  • Use fresh, quality ingredients – Avoid old or bruised produce and expired dairy products.
  • Drink ASAP – For the highest quality, enjoy smoothies immediately after making them.
  • Refrigerate leftovers promptly – Never leave smoothies sitting out at room temperature.

The Verdict on Storing Smoothies

In summary, for food safety it’s important to drink or refrigerate smoothies right away and not leave them out for more than a couple hours at room temperature. Most smoothies can be stored in a sealed container in the fridge for 1-3 days. Check for signs of spoilage before drinking refrigerated smoothies that have been stored for more than 24 hours. Following proper storage methods and food safety guidelines will help you avoid illness and make the most of your smoothie-making efforts!


Smoothies are a delicious and nutritious on-the-go meal or snack, but their fresh ingredients also mean they have a limited shelf life. Leaving smoothies out at room temperature for more than 2-4 hours can allow dangerous bacteria to multiply. Refrigeration extends the shelf life to 1-5 days depending on ingredients, but signs of spoilage mean a smoothie should be discarded. Following food safety best practices, using fresh ingredients, minimizing air exposure, and refrigerating promptly will help homemade smoothies stay fresher longer.

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