Has anyone managed to preserve yeast bread microorganisms by freezing or drying?

 

Yes, preserving yeast bread microorganisms (wild yeast and lactic acid bacteria) by freezing or drying has not only been successful, but it is one of the most reliable methods for long-term storage.

 

Here are the main ways to do it:

 

1. Drying (Safe and Easy)

 

This is considered one of the best methods, because dried yeast can remain viable at room temperature for several years, and in some cases even a decade.

 

Process: Active, fed yeast is spread thinly on baking paper and left to dry at room temperature (without additional heat, so as not to kill the microorganisms).

Storage: The dried “chips” are broken and stored in an airtight container, in a dry and dark place.

 

2. Freezing (Short-term or medium-term)

 

You can freeze yeast in liquid or dried form.

 

Liquid freezing: Active yeast is poured into a container for freezing (leaving room for expansion). In the freezer, it remains viable for about 3-6 months, then the concentration of microorganisms begins to decrease, so revival takes longer.

Freezing dried yeast: Some bakers recommend additionally placing dried yeast in the freezer - this further slows down any biological processes and helps maintain viability for even longer.

 

3. Lyophilization (Freeze-dried yeast)

 

This is the most professional, but more complicated method at home (a special lyophilizer is required).

 

Advantage: This method removes moisture at sub-zero temperatures, therefore preserving the largest part of microorganisms. Such yeast revives almost instantly, because the cells experience less stress than when dried in heat.

 

Important: When reviving sourdough that has been preserved in any way, it usually needs 2-3 feeding cycles before it becomes strong enough to leaven bread again.

 

"Lidl advertisement:

 

How to grow the perfect sourdough at home

 

In recent years, sourdough has been experiencing a real comeback - what was long considered a forgotten tradition is now increasingly being rediscovered. The upcoming Easter is a great opportunity for this: delicious sourdough pastries will undoubtedly decorate the festive table and entice guests with their aromas. Cooking trends show that sourdough is becoming not only the basis of bread, but also an inexpensive and versatile kitchen ingredient, providing wide opportunities for creative planning of festive meals, the press release says.

 

Today, more and more people choose to bake bread and other baked goods with sourdough not only for its taste, but also for its benefits: during natural fermentation, nutrients are better absorbed, and baked goods become easier to digest. This can be especially relevant during the festive season. “Sourdough is a great example of how old traditions help save money today. It is a very cheap ingredient that only requires patience, but its versatility is surprising: from hearty bread to dessert pancakes or Easter buns,” says Lina Skersytė, Head of Public Relations at Lidl.

 

Sourdough has deep historical roots: it is believed that its origin dates back to ancient Egypt, where people first discovered the process of natural fermentation several thousand years ago. Over time, leavened bread spread throughout the world and became the basis of the cuisine of many cultures. Although today we have many faster ways to leaven bread, sourdough remains an authentic choice for those who value naturalness, tradition and expressive taste. Six colorful and original sandwich recipes "Bread is an integral part of our diet, and holidays are unimaginable without baked goods, which are not only delicious but also practical. Whether it is sourdough bread, Easter braids and fragrant buns, both traditional and modern baked goods full of flavors are shared at the festive table," says L. Skersytė. Baked goods with sourdough are not only delicious, complementing the daily diet, but also decorating the festive table. On the occasion of the upcoming Easter, the retail chain invites you to try delicious and inexpensive recipes for baked goods with sourdough, starting first with the main ingredient - sourdough. How to grow and maintain sourdough at home

 

Making sourdough at home is much easier than it might seem at first glance. All you need is a few inexpensive basic ingredients (water and flour) and a little patience. Most of the process occurs naturally, the most important task when caring for it is to regularly “feed” it and monitor its activity. Embark on this discovery in the kitchen with the Lidl sourdough recipe.

 

Growing and maintaining sourdough at home is a very simple and inexpensive process – consistency is the key.

 

It is best to store the sourdough in a clean glass jar. Do not close it tightly – the sourdough needs to “breathe”.

 

Store in a warm (about 20–24 °C) place in the kitchen. If you bake less often, you can move the mature sourdough to the refrigerator – its processes slow down there.

 

The sourdough becomes “hungry” when it rises and starts to fall, and its smell becomes pronounced sour. Always use equal parts flour and water (e.g. 50 g each).

 

Ingredients:

 

Water

 

Whole rye flour

 

Making the sourdough:

 

Pour 50 g of lukewarm water into a medium-sized jar and add 50 g of whole grain rye flour. Mix well until you get a smooth, thick mass (similar to heavy cream). If the mass is too thick, add a splash of water, if too liquid, add a tablespoon of flour.

 

Leave the jar in a warm place for 24 hours.

 

In order for the sourdough to become strong and viable, it must be “fed” daily. Every day, remove half of the mass in the jar, and add 50 g of water and 50 g of rye flour to the remaining part.

 

Mix everything well and leave it warm again. After about a week, the sourdough will be ready for baking.

 

You will understand that it is suitable for use when, after a few hours after “feeding”, it rises 2-3 times, and you will see a lot of bubbles on the surface.

 

If you plan to bake less often than every day, “feed” the mature sourdough only once a week and store it in the refrigerator. Before baking, take it out, “feed” it and let it “wake up” at room temperature.

 

Bread sourdough.

 

Sourdough bread is one of the most versatile options that will make your Easter breakfast tastier. Such bread is more filling than usual, stays fresh longer, and natural fermentation helps to absorb nutrients more easily. The recipe for sourdough bread sandwiches presented by the retail chain is an inexpensive and delicious option for a festive breakfast, characterized by a rich taste and nutritional value. You will need: 100 g active sourdough 300 g wheat or wheat-rye flour 180 ml water 1 teaspoon salt 100 g cream cheese 100 g smoked salmon 1 fresh cucumber Handful of dill

 

Making the bread:

 

Mix the active sourdough with water and flour, stir in the salt and knead the dough. Leave to rise for 6–8 hours or overnight. Form a loaf and bake in an oven preheated to 220 °C for about 25–30 minutes. Cut the cooled bread into slices, spread with cream cheese, add the smoked salmon, cucumber slices and sprinkle with dill.”