
A yeast starter is a small unhopped beer that is used to cultivate yeast for brewing. It is made by boiling and fermenting a mini-batch of beer with dry malt extract and water. The starter is then chilled to drop the yeast out of suspension, and the liquid is decanted to keep only the yeast. This process can be done in one vessel or in a separate pot to boil a small quantity of wort.
Characteristics | Values |
---|---|
Vessel | Jar, plastic bottle, Erlenmeyer flask |
Wort | Dry malt extract (DME) |
Gravity | 1.036 - 1.040 |
Time | 24 hours |
Sanitizer | Aluminum foil, funnel |
Water | Boil |
Fermentation | Chill |
What You'll Learn
Boil and ferment a mini-batch of beer
When making a yeast starter, you’re essentially boiling and fermenting a mini-batch of beer. First, you’ll need a vessel large enough to hold the volume of the starter and something to cover the top, like foil or a stopper. The vessel can simply be a jar or plastic bottle, but Erlenmeyer flasks that can withstand direct heat are a popular choice since the entire boiling and fermentation process can be done in one vessel. If not using a flask, you’ll need a pot to boil a small quantity of wort. Other than that, you’ll need some water, dry malt extract and sanitizer.
A starter is simply a small unhopped beer, whose sole purpose is to allow the yeast to reproduce. You cultivate this yeast and then (usually) throw away the resulting 'beer', keeping only the yeast. This is done by making a small batch of lower gravity (1.036 - 1.040) wort by boiling dry malt extract (DME) and allowing it to ferment to completion. Lower gravity is best as it maximizes healthy yeast growth. The more yeast you need, the larger the starter you need.
A starter is simply a small volume of wort that’s used for the sole purpose of growing yeast cells. It takes only about half an hour, but plan to make it at least 24 hours before you need the yeast. This will give the yeast cells time to reproduce.
When the starter has stopped fermenting, chill it for 24 hours or more in the refrigerator to drop the yeast out of suspension. Then, when you’re ready to use it, decant most of the liquid, then swirl vigorously to re-suspend the yeast in the remaining liquid, and pour into fresh wort. You’ll need to make your starter several days in advance for this. The method you choose is up to you. Some brewers who own an Erlenmeyer flask can boil, chill, and ferment the starter all in the same vessel. Make your starter at least 24 hours before you need the yeast. Remove your yeast from the refrigerator. If you’re using a Wyeast Activator, go ahead and smack the pack. It doesn’t need to swell; you just want to release the nutrients in the internal pouch. Sanitize your fermentation vessel of choice, along with aluminum foil and a funnel, if needed. Measure one gram of DME for every 10 milliliters of starter wort.
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Use a vessel large enough to hold the starter
When making a yeast starter, you need a vessel large enough to hold the volume of the starter. This is because a starter is simply a small volume of wort that’s used for the sole purpose of growing yeast cells.
The vessel can simply be a jar or plastic bottle, but Erlenmeyer flasks that can withstand direct heat are a popular choice since the entire boiling and fermentation process can be done in one vessel. If not using a flask, you’ll need a pot to boil a small quantity of wort.
For a liter starter, use at least a 1.5-quart saucepan to avoid a boilover. Other than that, you’ll need some water, dry malt extract and sanitizer.
When the starter has stopped fermenting, chill it for 24 hours or more in the refrigerator to drop the yeast out of suspension. Then, when you’re ready to use it, decant most of the liquid, then swirl vigorously to re-suspend the yeast in the remaining liquid, and pour into fresh wort.
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Boil dry malt extract and allow it to ferment
When making a yeast starter, you’re essentially boiling and fermenting a mini-batch of beer. First, you’ll need a vessel large enough to hold the volume of the starter and something to cover the top, like foil or a stopper. The vessel can simply be a jar or plastic bottle, but Erlenmeyer flasks that can withstand direct heat are a popular choice since the entire boiling and fermentation process can be done in one vessel. If not using a flask, you’ll need a pot to boil a small quantity of wort. Other than that, you’ll need some water, dry malt extract and sanitizer.
Brewers who own an Erlenmeyer flask can boil, chill, and ferment the starter all in the same vessel. Make your starter at least 24 hours before you need the yeast. Remove your yeast from the refrigerator. If you’re using a Wyeast Activator, go ahead and smack the pack. It doesn’t need to swell; you just want to release the nutrients in the internal pouch. Sanitize your fermentation vessel of choice, along with aluminum foil and a funnel, if needed. Measure one gram of DME for every 10 milliliters of starter wort.
When the starter has stopped fermenting, chill it for 24 hours or more in the refrigerator to drop the yeast out of suspension. Then, when you’re ready to use it, decant most of the liquid, then swirl vigorously to re-suspend the yeast in the remaining liquid, and pour into fresh wort.
A starter is simply a small volume of wort that’s used for the sole purpose of growing yeast cells. It takes only about half an hour, but plan to make it at least 24 hours before you need the yeast. This will give the yeast cells time to reproduce.
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Chill starter for 24 hours to drop yeast
When making a yeast starter, you are essentially boiling and fermenting a mini-batch of beer. You will need a vessel large enough to hold the volume of the starter and something to cover the top, like foil or a stopper. The vessel can simply be a jar or plastic bottle, but Erlenmeyer flasks that can withstand direct heat are a popular choice since the entire boiling and fermentation process can be done in one vessel. If not using a flask, you’ll need a pot to boil a small quantity of wort. Other than that, you’ll need some water, dry malt extract and sanitizer.
A starter is simply a small unhopped beer, whose sole purpose is to allow the yeast to reproduce. You cultivate this yeast and then (usually) throw away the resulting 'beer', keeping only the yeast. This is done by making a small batch of lower gravity (1.036 - 1.040) wort by boiling dry malt extract (DME) and allowing it to ferment to completion. Lower gravity is best as it maximizes healthy yeast growth. The more yeast you need, the larger the starter you need.
When the starter has stopped fermenting, chill it for 24 hours or more in the refrigerator to drop the yeast out of suspension. Then, when you’re ready to use it, decant most of the liquid, then swirl vigorously to re-suspend the yeast in the remaining liquid, and pour into fresh wort. You’ll need to make your starter several days in advance for this. The method you choose is up to you. Some brewers don’t want spent starter wort going into their beer. Others don’t mind. Choosing the right-sized starter requires math that depends on your ultimate batch size, the gravity of the wort, the age of the yeast, and other variables.
A starter is simply a small volume of wort that’s used for the sole purpose of growing yeast cells. It takes only about half an hour, but plan to make it at least 24 hours before you need the yeast. This will give the yeast cells time to reproduce.
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Decant liquid and swirl to re-suspend yeast
When making a yeast starter, you decant most of the liquid and swirl vigorously to re-suspend the yeast in the remaining liquid. This is done by chilling the starter for 24 hours or more in the refrigerator to drop the yeast out of suspension. When you’re ready to use it, decant most of the liquid, then swirl vigorously to re-suspend the yeast in the remaining liquid, and pour into fresh wort. You’ll need to make your starter several days in advance for this. The method you choose is up to you. Some brewers don’t want spent starter wort going into their beer. Others don’t mind. Choosing the right-sized starter requires math that depends on your ultimate batch size, the gravity of the wort, the age of the yeast, and other variables.
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Frequently asked questions
A yeast starter is a small unhopped beer that is used to cultivate yeast.
To make a yeast starter, you will need a vessel large enough to hold the volume of the starter and something to cover the top, like foil or a stopper. You will also need water, dry malt extract and sanitizer. Boil dry malt extract and allow it to ferment to completion. Lower gravity is best as it maximizes healthy yeast growth.
It takes about half an hour to make a yeast starter, but it is best to make it at least 24 hours before you need the yeast.
When the starter has stopped fermenting, chill it for 24 hours or more in the refrigerator to drop the yeast out of suspension. Then, when you’re ready to use it, decant most of the liquid, then swirl vigorously to re-suspend the yeast in the remaining liquid, and pour into fresh wort.