The Scientific Reason Frozen Bananas Taste So Sweet - Tasting Table (2024)

ByJennifer Sweenie/

The banana, everybody's favorite self-packaged grab-and-go snack, comes in many delicious forms. Whether you're slipping it into your gym bag, enjoying some slices with diner pancakes, using a few to make healthier ice cream, or flambéing one for a foster, most people can agree — no good banana should go to waste.

While not as fickle as the beloved avocado, bananas do seem to go from unripe to eat-me-now to worthy of banana bread only pretty quickly. If you're not up for donning an apron and whipping up a batch of baked goods, the simplest solution to not waste a bunch of browning bananas is to pop them in the freezer for a breakfast smoothie at a later date.

If you've ever snuck a bite of that defrosted banana as you're mashing it up for your bread or muffins, you may have noticed it tasted a little bit like a saccharine glob of mush. As it turns out, there's a scientific reason for that. So why do frozen bananas taste so sweet?

From starch to sugar

The Scientific Reason Frozen Bananas Taste So Sweet - Tasting Table (2)

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As a banana ripens and changes from green to yellow and finally turns brown, starches are broken down into sugar by an enzyme known as amylase.According to a research article published in theGlobal Journal of Nutrition & Food Science in 2022,this starch-to-sugar conversionis responsible for softening the fruit and increasing its sweetness as it ripens. This is why a brown-spotted banana tastes more like dessert than a green-tipped one and why overripe bananas are best suited for sweetening baked goods. This same amylase enzyme is present in our saliva and has an important job of beginning the breakdown of carbohydrates into glucose in our mouths, per Alton Memorial Hospital.

Once you pop that banana in the freezer, the water present in its flesh freezes. The frozen water starts to break open the cells of the banana, distributing both the enzyme and stored starches throughout the fruit in the process. When you remove the banana from the freezer, the amylase diffused in the freezing process starts to convert the starch diffused in the freezing process into sugar, thus making the defrosted frozen banana sweeter on the tongue (via Fine Dining Lovers).

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The Scientific Reason Frozen Bananas Taste So Sweet - Tasting Table (2024)

FAQs

The Scientific Reason Frozen Bananas Taste So Sweet - Tasting Table? ›

When you remove the banana from the freezer, the amylase diffused in the freezing process starts to convert the starch diffused in the freezing process into sugar, thus making the defrosted frozen banana sweeter on the tongue (via Fine Dining Lovers).

Why do frozen bananas taste sweeter? ›

Freezing bananas and then thawing them does not affect their nutritional properties or taste, in fact, it is thought that they could even be sweeter. This, thanks to the enzyme known as amylase, responsible for making them sweeter as they mature, as it breaks down starch.

Why does my banana taste sweet? ›

The reason bananas get sweeter as they ripen is that their starch is broken down into sugar. When your body has to break down the starch itself (as it does when you eat a green banana), your blood sugar rises more slowly.

Why do frozen bananas taste better in smoothies? ›

People freeze bananas for smoothies because frozen bananas add a creamy texture and natural sweetness to the smoothie, making it thicker and more enjoyable to drink. Additionally, freezing bananas also helps to preserve their freshness, as they can be stored in the freezer for several months.

Are frozen bananas tasty? ›

They are delicious on their own.

Frozen bananas can be sliced into pieces that taste like mini bites of ice cream.

Are bananas sweeter frozen? ›

The amylase in the banana diffuse during the freezing process. When its defrosted it starts to convert the starch diffused during the freezing process into sugar, in turn it makes the defrosted frozen banana sweeter to the taste than eating fresh bananas. So the need for added sweetener in the recipes is not necessary.

Do bananas get sweeter when you freeze them? ›

Frozen bananas have a slightly sweeter taste, as the freezing process breaks down the starches in the fruit and converts them into natural sugars.

Why is frozen fruit so sweet? ›

Frozen fruit is often softer and sweeter than fresh fruit. This is because the water in the fruit expands when it's frozen, making the cells burst, resulting in the release of the natural sugars. Frozen fruit can also have a slightly different flavor than fresh fruit.

Are real bananas sweet? ›

From Apple Bananas to Williams Bananas

What all bananas have in common is a fairly starchy texture, a mildly sweet flavor as compared to other tropical fruits, and the wonderful ability to keep ripening after they've been plucked from their trees.

Has the taste of bananas changed? ›

Like the prisoners in Plato's allegory of the cave, most Americans are unaware that today's yellow banana is like a shadow of the one that preceded it—a yellow banana with a sweeter flavor, firmer texture, and better culinary versatility was once the norm.

Are frozen bananas high in sugar? ›

So when a frozen banana is thawed, the amylase and starches in the cells diffuse through the defrosting fruit. This leads to further conversion of some starches to sugar, which contributes to the sweeter taste of frozen bananas. These are the two ways why fruit taste sweeter: it has a high sugar content to start with.

Are frozen bananas healthier than regular bananas? ›

While it is true that bananas will lose their firmness when thawing takes place, the flavour and nutritional value will remain the same as fresh bananas. It is recommended that you keep both fresh and frozen bananas on hand to have the best of both worlds.

Can you eat frozen bananas straight from the freezer? ›

When frozen correctly, bananas can be used straight away. Always use bananas that are fresh. Bananas in the freezer will be at their best within six months.

When should you not use frozen bananas? ›

"Whole, peeled frozen bananas keep for three months," says Weinstein. If they're frozen together, you can simply snap them apart. "Sliced bananas won't last as long, [about] two months tops," says Weinstein.

Can you eat the peel on a frozen banana? ›

In short, yes, banana peels are safe to eat and offer some nutrition.

Do frozen bananas taste like ice cream? ›

Sure, frozen bananas taste like ice cream (a little), but it's not the same as having a bowl of truly spectacular, real-deal ice cream. If you want luscious, creamy banana ice cream the way your grandmother would have done it—with real cream, eggs, and a touch of sugar—THIS IS THAT RECIPE.

Why does frozen fruit taste sweeter? ›

Frozen fruit is often softer and sweeter than fresh fruit. This is because the water in the fruit expands when it's frozen, making the cells burst, resulting in the release of the natural sugars. Frozen fruit can also have a slightly different flavor than fresh fruit.

Are frozen bananas as healthy as fresh? ›

Not only does the freezing process not affect the taste or the nutritional value of the bananas, but defrosting bananas makes them softer and therefore easier to mix into batter.

What does freezing do to bananas? ›

You can freeze unpeeled bananas, if you want—you'll just need to thaw them and peel them when they're ready. But keep in mind that bananas frozen that way get mushy when they're thawed, so you'll need to use them only for recipes that require mashed bananas.

Can I just eat a frozen banana? ›

Yes, you can definitely eat a frozen banana without thawing it first. In fact, many people enjoy the unique texture and taste of a frozen banana as a refreshing snack.

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