What does freeze-drying involve?

Have you ever wondered how fruit can keep all its flavour and nutrients for months without being stored in the fridge? The answer lies in freeze-drying, a technique that transforms fresh fruit into a light, crunchy and super practical version without losing what matters most. In this article, we’ll explain what freeze-drying involves, its stages, and why it’s a revolution in the way we consume natural foods.

What is freeze-drying and why is it so special?

Freeze-drying is a preservation method that removes water from food through freezing and vacuum dehydration. This makes it possible to retain the structure, flavour, aroma and most of the nutrients of the original product.

Unlike traditional drying, the freeze-drying process avoids the use of high temperatures, which protects sensitive vitamins such as vitamin C or natural antioxidants. The result? Ready-to-eat fruit with no additives or added sugars, like the freeze-dried fruit sticks from Greenora.

Freeze-drying process step by step: how fruit becomes so light and tasty

1. Rapid freezing to preserve nutrients

How freezing is carried out without losing quality

It all begins with ultra-rapid freezing, which transforms the water present in the fruit into ice crystals. This step is crucial, as it allows the cellular structure of the food to remain intact and preserves its nutritional and organoleptic properties.

2. Primary drying: removing water without heat

Sublimation, the key to the freeze-drying process

Here’s where the magic happens: under controlled vacuum, ice turns directly into vapour without passing through the liquid state. This phenomenon, called sublimation, removes up to 95% of the water without altering the natural compounds of the food.

3. Secondary drying: ensuring long-term preservation

Removing residual moisture and final sealing

Finally, the small amount of residual moisture is extracted to prevent oxidation or the growth of microorganisms. The resulting food is light, crunchy and stable for months, with no need for preservatives or refrigeration.

Advantages of freeze-drying compared to other preservation methods

Flavour and texture intact

Thanks to the absence of heat, freeze-dried fruit maintains its authentic flavour and a pleasant texture that is slightly crunchy or instantly rehydrates in water, milk or yoghurt.

Nutrient preservation

The freeze-drying process is one of the best for retaining vitamins, minerals and antioxidants. This means that eating a Greenora stick is like eating fresh fruit—but more convenient and without waste.

Long shelf life with no refrigeration required

By removing almost all water, freeze-dried fruit is perfectly preserved for months. You can carry it in your bag, to the gym or to work without worrying about it going off. Ideal for active lifestyles.

Applications of freeze-drying in daily life

Healthy eating and natural snacks

From quick breakfasts to post-workout snacks, freeze-dried fruit is perfect for those seeking healthy, quick and hassle-free options. No washing, chopping or peeling needed.

Products like Greenora’s freeze-dried fruit sticks

At Greenora, we make the most of this process to offer you single-dose sticks of 100% fruit, which you can mix with water, milk, yoghurt or add to your favourite recipes. Some of our blends:

• Greenora Well Being: with apple, strawberry, banana and carrot—ideal for supporting the digestive system and skin.
• Greenora Immune: a tropical mix with mango, pineapple and ginger—perfect for boosting defences.
• Greenora Fit: energy and antioxidants with date, blueberries and raspberries.
• Greenora Green Boost: a green explosion with spinach, kiwi and spirulina—to revitalise effortlessly.

If you don’t know which one to choose, the Greenora Mix Box includes a variety of flavours so you can discover your favourites with ease.

Freeze-drying is not just modern technology—it’s a practical and healthy way to enjoy real fruit without giving up flavour or nutrients. Thanks to this process, products like Greenora’s sticks become the perfect allies for your daily wellbeing.