How to Blanch Vegetables For Freezing?

Why You Should Blanch Vegetables Before Freezing

why blanch vegetables before freezing

Certain veggies can be exposed to frost only after a quick boil. Definitely, everyone who tends to preserve them for long-term use would like to know how to blanch veggies properly.

In this article, all the secrets of blanching vegetables will be revealed!

blanching vegetables for freezing
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Why Blanching? The Method’s Benefits

Let’s agree that most of us are more used to the idea of preserving foods raw in the freezing camera. Quite many people would probably wonder why to blanch vegetables before freezing at all.

However, such an approach as raw freezing has its cons and the major one is that raw vegetables still have natural enzymes that will later cause the loss of taste and texture of the product.

Also, freezing vegetables raw makes them more predisposed to sooner spoiling.

For this reason, blanching vegetables is widely used to keep our foodstuff more durable.

Besides, the good news is that one can blanch almost any veggies and the procedure itself doesn’t take much time or effort.

blanching vegetables
Photo by Louis Hansel @shotsoflouis on Unsplash

Blanching Times For Vegetables. What And How Long To Blanch

Of course, blanching has its specific nuances that are good to know, especially if you’re not a pro in all those kitchen tricks.

When facing the necessity to pre-treat the veggies before tossing them to the freezing camera, many people start wondering how long to blanch certain sorts of vegetables. And that’s a good question since an excessive blanching may ruin the product whereas the insufficient one won’t protect it from spoiling.

To make this issue easier to clarify, we have prepared a blanching vegetables chart where you can check blanching times of the most widely used veggies!

Vegetable Water blanching (min) Steam blanching (min)
asparagus, small 2 3
asparagus, medium 3 5
asparagus, large 4 6
beans (snap, green, wax) 3 5
broccoli flowerets 3 5
shredded cabbage 1.5 2.5
small carrots, whole 5 8
carrots (sliced/diced/strips) 2 3
cauliflower flowerets (1 inch) 3 5
celery 3
eggplant 4 6
greens (except collard greens) 2 3
kohlrabi whole (cubes) 3 (1)
mushrooms whole 9
mushrooms sliced 5
onions whole 3-7
onion circles 10-15 sec
sweet pepper halves (strips) 3 (2) 5 (3)
summer squash 3 5

 

With this table at hand, it will be always easy to double-check whether you’re going to blanch the veggies correctly!

blanching times for vegetables
Photo by Kai Pilger on Unsplash

How to Blanch Vegetables For Freezing

So how to actually blanch vegetables, you may ask?

Well, despite the fact that different sorts of this foodstuff must be treated for a different period of time, the process of blanching is always the same.

  • For blanching veggies with water, they must be first cleaned from dust and debris and trimmed if necessary.

Then we put them into boiling water and keep there for the required amount of time transferring to the cold water immediately after the time if over.

Afterward, we only have to drain our veggies thoroughly and pack.

  • Steam blanching is the same except for that veggies are treated with steam, not water. For this method, a steaming basket is used and we place it over the boiling water instead of immersing it into the liquid.

As you can see, nothing complicated at all! Nevertheless, this method proved itself to be extremely effective for preserving the veggies fresh and edible much longer.

how to blanch
Photo by Reinaldo Kevin on Unsplash

What Vegetables Can Be Frozen Without Blanching?

Those who blanch often enough sometimes wonder whether freezing vegetables without blanching is possible. Let’s agree, not everyone would like to spend time on preparation even if it takes so little time!

We can say that freezing fresh vegetables without blanching is possible for almost any veggies. However, certain kinds of them are considered to be easier to expose to frost.

For instance, corn, peas, broccoli, carrots, cauliflower, squash, and some greens (e.g. kale, spinach, collards, etc) get frozen better than others.

For more useful information, check out our most frequent questions below.

Frequently Asked Questions

⭐ Can you freeze fresh vegetables without blanching?

Yes, it is possible, however, such veggies last less than their blanched counterparts.

⭐ How to freeze asparagus?

Freeze asparagus either blanched or raw, any methods will work but the raw sprouts will last not so long, consider this, too.

⭐ Why do you blanch vegetables before freezing?

Blanching prevents the enzymes’ reactions which makes veggies more durable and protects them from spoiling too soon.

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Written by
Elisa Chan
She is a passionate cooker because of her education she loves to make healthy and delicious dishes. She is happy to share with us her proper freezing and storing tips to keep all the nutrients. Currently working on easy to implement storing food guide.
Or editors independently research, test, and recommend the best products; you can learn more about our review process here.
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