Yeast is used to make everything from beer to bread, but some people don't know how to grow this superfood at home. The process used to breed yeast can seem very complicated at first as it includes special steps, tools, and chemicals, but is relatively easy and simple to learn. You can breed yeast at home using some basic kitchen tools such as a glass or glass baby food jar, paper towels, a pot to boil pasta, and a cotton swab. When you learn how to grow yeast at home, the process becomes a breeze. Plus, making bread, beer, and other ways of cooking or baking that require yeast will be simpler.
Step
Method 1 of 2: Making Yeast from Malt Extract
First warm-up: making media
Step 1. Bring 250 ml of water to a boil
When it boils, remove the water from the stove.
Step 2. Stir 15 grams of malt extract with the water until completely dissolved
Simmer again for 10-15 minutes. This is to ensure sterility.
The second boiling is to sanitize the mixture of media called "wort"
Step 3. Add one packet of gelatin to the wort
Stir until dissolved – completely dissolved.
Step 4. Pour some of the gelatin-wort mixture into each jar or saucer you used to make the culture
Fill each container to a height of 1.25 cm. This is easiest to do with a sterile funnel if you use the container in a test tube or vial.
Save an empty jar or cup for later use in the breeding process
Second heating: media inoculation
Step 1. Place a jar or saucer in the bottom of a large saucepan
Make sure the pot has a lid! This is why having a container with a flat bottom is so useful. If you're using a tube with a round bottom, you'll need to place it on a shelf so that it stands up.
Step 2. Add 5-7.5 cm of water to the pot
Or just enough so that the water reaches half the sides of the breeding bowl. Make sure no water gets into the jar or saucer.
Install the stopper caps carefully. Don't screw it in, just screw it on-this will be useful for sterilizing jar lids. If you tighten it, then things can explode
Step 3. Bring water to a boil in a saucepan
Cook over high heat for 15 minutes to sterilize the crucibles or breeding jars. Then remove the saucer or jar from the hot water using food tongs and let cool. This may take a while, so be patient.
- You need to wait for it to cool to at least 40 degrees Celsius before attaching a sterile lid, otherwise the cooling growth medium will cause the container to suck the lid into it or explode. When cool enough, screw the lid on the container tightly. People who are skilled at making yeast usually refrigerate for 24 hours on an incline.
- This is often called a "slope" by home yeast makers because many use a test tube and tilt it so that the wort-gelatin mixture inside hardens at a certain angle.
Final stage
Step 1. Organize your work area
Now you need some stuff. It's easiest if everyone is by your side when starting this process. You need:
- Packaging yeast
- Vials or breeding containers
- Straightened paper clip or long needle
- Cotton pen or folded tissue
- The vial contains ethyl alcohol
- The breeding cup on top of a clean tissue
- Sterilized unused empty breeding vials, with lids
Step 2. Prepare the yeast according to the directions on the package
Each pack will contain different directions and instructions, so follow them carefully. You will need to shake the yeast until it expands and forms a paste.
Step 3. Start culturing the yeast
Open the yeast package in half. Rub the needle or paper clip with a cotton swab that has been smeared with alcohol (this is to sterilize the needle and remove contaminants that can prevent yeast from multiplying properly).
Take a small amount of yeast paste with a needle or poke a paper clip on the yeast packet to coat it
Step 4. Insert the needle into the gelatin mixture and remove the yeast
Do this step as quickly as possible to prevent contamination. Do not breathe if absolutely possible.
Some yeast makers recommend placing a tissue to absorb alcohol in the open part of a jar or saucer and inserting a needle or paper clip through the tissue and into it to prevent contamination when adding yeast
Step 5. Close the jar or saucer tightly
Place the jar in a clean, cool, dark place for 72 hours. Within a few days, you will see a cloudy film on the surface of the yeast, and a few days later, a nipple layer about 1 mm thick will form.
Wipe the outside of the jar and lid with an alcoholic cotton swab. As usual, everything needs to be completely sterile
Step 6. Slightly stretch each jar to release the pressure that builds up on the jars, then tighten again
You will notice a hissing sound when you open the jar. This is excess carbon dioxide from the growing yeast, which comes out to relieve pressure on the jar
Step 7. Label each jar with the date the yeast was cultured
Store in a clean refrigerator to continue breeding growth. This yeast will keep in perfect conditions for at least three months.
Method 2 of 2: Making Yeast Breeds from Potatoes
This is a way to make yeast without packaged yeast. This recipe is perfect for large families who need more than one loaf of bread.
Step 1. Boil 1 medium sized potato in fresh water until cooked
Drain, but save the boiled water.
Step 2. Mash the potatoes
Add 1 teaspoon of granulated sugar and a pinch of salt.
Step 3. Cool the potatoes until they are lukewarm
Add enough boiled water to make a mixture of 950 grams.
Step 4. Cover the potato and place it in a warm place
Let it ferment.
