How To Avoid Avocado In Sushi From Darkening?


How To Avoid Avocado In Sushi From Darkening

We all know that avocados tend to get dark after you remove it from its shell, so how to avoid avocado in sushi from darkening? Sushi lovers have been verifying avocado sushi’s authenticity, but it is one of the most challenging types of sushi to make due to this situation. So, here are some ways to help you preserve the freshness of the avocado in your sushi.

To keep the avocado in your sushi fresh, you can use some condiments that are usually accessible in your home. You can chop a quarter of red onion in the bottom of a sealable container and place the avocado flesh-side up on the onion bed. If it’s too smelly for you, you can brush lemon juice or olive oil on the avocado. Aside from keeping the avocado fresh, it also adds some more flavor to it.

Avocados are weird fruits. Despite its creamy flavor and lack of real sweetness, there’s a dilemma when you consume it after you take it off its shell – it turns brownish. Fortunately, there are things that you can do to keep it from happening. Read on and see how to avoid avocado in sushi from darkening.

Why Avocados Turn Dark?

To avoid browning, knowing what causes it in the first place is crucial. Some fruits, apples, potatoes, avocados, and more contain phenolic compounds and enzymes that create a brown-black pigment when exposed to oxygen.

The cell surface typically serves as a barrier between these compounds and oxygen, but this barrier is breached when you cut the substance. As a result, it becomes oxygenated compounds, and a chemical color-producing reaction occurs. Not all products contain these chemicals. So, not all fruits turn to dark when you slice it open.

Since oxygen is the catalyst for this reaction, it makes sense that you can prevent the browning of the fruit by limiting oxygen exposure. There are many ways of preventing exposure to oxygen or stopping the oxygenation reaction.

For this avocado keeper, you might spring or try one of these at-home tricks. Eventually, the exposed flesh can turn to brown after some time. However, these strategies can only help prolong the time you can store your sliced avocado without worrying about excessive browning. None of the methods are everlasting.




How To Avoid Avocado In Sushi From Darkening? 

How To Avoid Avocado In Sushi From Darkening

Avocados are one of those “all-around” fruits that you can use for various purposes. For example, you can add it to sandwiches, salads, and sushi.

However, the problem starts whenever you see the darkening of it after slicing the fruit open. The dark appearance looks unappetizing. As mentioned, there are approaches to preserve the fresh and bright green color of avocados. However, it is only temporary. Eventually, it will turn to brown. Regardless, here are some ways to avoid avocado in sushi from darkening.

Use Of Red Onions

In the bottom of a sealable jar, chop up a quarter of the red onion and put the avocado flesh-side up on the onion bed. The vapors from the onion avoid the browning of the avocado. Still, because the onions do not directly enter the portion of the avocado you consume, there is no taste transfer.

Brush Some Olive Oil On The Avocado

Brush the flesh of the avocado with olive oil, which has no strong flavor. The oil prevents air from reaching the fruit’s exposed portion, avoiding oxidation and all the hideous brown streaks. Place it in your refrigerator in an airtight jar before you want the most.

Use Lemon Juice To Preserve Freshness

Brush the lemon juice with the avocado, and you’ll get defense close to olive oil. The citric acid in the juice will keep browning at bay. Again, store to get as much protection as possible in an airtight jar.

Wrap The Avocado In A Plastic

If you want to delay avocado’s browning, do it by covering an avocado half tightly with plastic wrap because it prevents air away from the surface. Then, you can put it on your fridge for extra protection from oxygenation.




Water Bath

Many chefs swear that because it prevents contact with the sunlight, immersing avocados in water stops them from browning. Some caution, however, to only store avocados in this way for a short period, as prolonged water exposure may make them slimy.

Is it OK To Eat Brown Avocado?

When exposed to the sunlight, avocados, like apples, turn brown. Probably, it’s a chemical reaction and not a symptom of avocado being rotten. The brown portion of the avocado might look unpleasant and have a bitter taste, but it’s still healthy to eat. Before it gets spoiled from a process called oxidation, you’d have to put an avocado out for a few days. It occurs when, with the help of polyphenol oxidase enzymes, oxygen interacts with compounds called polyphenols.

It damages the tissue of the flesh as a consequence, turning it brown in the process. The brown color, however, is not an indication that the fruit is rotten. You’d have to set it out for a couple of days before oxidation destroys it. Currently, this brown color comes from a non-toxic chemical called melanin. From the berries to the iris in your eyes, it appears in everything.




A bowl of brown avocado, provided that it has been with you for a day or two, will not harm you. Nevertheless, the more oxidation that occurs, the more tissues it destroys. Bruising or chilling an avocado for too long, for example, can lead to extensive oxidation, which eventually destroys so much tissue that it affects the fruit’s texture and taste to make it mushy and bitter. A little browning will not make a difference, however. Only make sure it is still not spoiled.

How Long Does It Take To Turn Avocado To Brown?

How much oxygen is in the air, the temperature, and how acidic the fruit is, how quickly your avocado browns depend on the climate. The chemical reaction is accelerated by warmer temperatures, turning your avocado brown quicker. However, the acidity prevents oxidation if you squirt any citrus on top, and you can keep it looking fresher for longer. 

5 Ways to Tell Your Avocado Has Gone Bad

Avocado does not begin to ripen until farmers take it off from the tree, but afterward, the process happens quite quickly. When an avocado is rotten and no longer adequate to eat, you can wonder how to decide it. Here are five signs the avocado went wrong.

1.Too Soft And Dented Skin

Using the palm of your hand to pinch the avocado while testing for ripeness gently. Do not use your fingers to press the fruit, as this may bruise the flesh. It’s underripe if the avocado is very firm and doesn’t give at all. If you give it a little, it’s probably ripe and ready to eat. If pressing, however, leaves a slight indentation, it may be overripe for slicing. If the pressing leaves a big dent and the fruit feels mushy, it is possibly spoiled. Furthermore, if an avocado already has a recessed area or appears deflated before you pinch, it is probably past its prime.

2.Black Outer Shell

As they mature, some avocados types undergo distinct skin color changes, particularly the Hass variety, which accounts for about 80 % of the world’s avocados eaten. Hass avocados have bumpy, bright green skin when not fully mature. When ripe, it progresses towards dark green or brown. It’s overripe and potentially rotten if the skin looks almost black, and the fruit feels mushy upon contact.

Other varieties maintain their green skin color, like the zutano and Fuerte, regardless of how ripe they are. To decide whether they have gone wrong, use other strategies, such as feeling for firmness.




3.Dark And stringy flesh

When you slice an avocado, it’s easier to tell whether it’s gone wrong. Of course, after you purchase it, this is just an option. There is light green flesh in an avocado that’s ready to eat. There are brown or black spots around the entire flesh of a rotting one. An isolated brown area may be due to bruising rather than widespread spoilage and can be cut away. Dark stripes in the flesh are another likely indicator of rotting.

4.Foul Odor

A good, slightly sweet aroma and very nutty taste are common in ripe avocados. It can develop an odd taste and odor, as the fruit spoils. It could have bacterial spoilage if it has a sour flavor or smell. A chemical smell and taste might mean that it’s rancid. When oxygen or microbes damage or break down the unsaturated fat of the fruit, this can happen.

The formation of potentially toxic compounds may result from rancidity. If you think it’s rancid, don’t eat avocado. The taste of spoiled avocados can vary, but it’s typically easy to say whether they’re past their prime by taste. You may decide whether the avocado is spoiled by smell, taste, touch, and visual inspection.

5.Appearance Of Mold

Avocado mold usually is white or dark, and it looks blurry. Don’t sniff it because if you are allergic to it, you can inhale mold spores and cause breathing problems. Stop buying avocados with mold, as it can enter the flesh and cause decay. If you cut an avocado open and you see mold, discard the whole fruit. While in one area, you can only see mold, it can quickly spread through the soft flesh. Don’t try to save it.

Frequently Asked Questions

Avocado is a healthy fruit that you can add to sushi and other dishes like salads and sandwiches. Sometimes, it gets dark when exposed to oxygen. Most of the time, you will experience this situation when preparing your sushi. However, it doesn’t mean that it is not safe for consumption. 




How do you keep avocado fresh in sushi?

One way to keep your avocado fresh in sushi is by placing the whole avocado with intact skins in a 43°C water bath for a couple of hours. This method will help you deactivate the enzyme that causes browning. You can also drizzle the avocado slices with some citric acid like lime juice and even olive oil.

How long does avocado last once cut?

Usually, avocados can last up to 3 to 4 days after you slice it open. However, it still depends on the surrounding factors like climate and heat temperature. Better yet, you can refrigerate the avocado after cutting it.

Should you refrigerate avocados?

You should either store it in the refrigerator or at room temperature, depending on the ripeness of your avocado. To slow the ripening process or leave it on the counter or in the pantry to allow it to ripen further, stick your avocado in the fridge.

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