Yeast Starter Kit - 500 mL

Yeast Starter Kit - 500 mL

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500ml Erlenmeyer flask, 1/2lb light dried malt extract & 1oz Fermaid K (Yeast Nutrient). This starter kit is for growing liquid yeast starters. The idea is that the starter acts as a mini batch of beer where the yeast cells replicate before being pitched into your 5 gallon batch. More yeast means fermentation starts faster. The bacteria and wild yeast that got into your beer during the transfer from kettle to fermenter have less chance of creating a negative flavor impact upon your beer.

(We do not recommend the use of an electric element with these flasks. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.)

In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters!(Student grade is not the highest grade flasks and will have minor defects)

Item # Y300
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Availability California - In Stock
Pennsylvania - In Stock
Weight 1 LBS
Community Q&A

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Browse 1 question Browse 1 question and 3 answers
Why did you choose this?
MoreFlavor Store
Brandon Helm on Jan 26, 2023
Want to learn brewing.
Valued C on Dec 17, 2022
Brandon Helm on Jan 26, 2023
John W on Jan 13, 2023
Want to learn brewing.
Valued C on Dec 17, 2022
Leo Martinez I on Nov 22, 2022
To help make a quick yeast starter
Glen on Jul 23, 2022
might need this sometime soon for rehydrating yeast
Chris K on May 25, 2022
for the yeast
Russ C on May 17, 2022
To get the yeast started and keep it going until peak activity before pitching.
Camron J on Mar 15, 2022
because a healthy yeast starter is the key to successful fermentation, I've been told
Jackson S on Sep 1, 2021
Better fermentation.
Herman Pierson I on Jan 21, 2021
Did not have one
Dana K on Jun 20, 2020
May make own bread, and for beer.
ARTHUR S. on Jun 1, 2020
I want to cultivate my own mead
Sean R on May 17, 2020
Larry D on Apr 27, 2020
Seems enough for 5 gallon batch
Dan D on Apr 27, 2020
I brew all-grain but like to kick start my yeast so fermentation takes off faster
John V on Apr 7, 2020
To enhance pitch /fermentation
Paul S on Nov 22, 2019
Already have 2000 mL kit
Valued C on Mar 8, 2018
John W on Jan 13, 2023
Leo Martinez I on Nov 22, 2022
Can I use my wort instead of DME for a starter?
chris schatzinger on Sep 15, 2020
BEST ANSWER: Yes but the porpuse of a starter is to make it ahead of time so the yeast can be growing and mulplying so they are in full force when you pitch

2.6 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 3 out of 5
Cracked flask
It must have dameged on delivery.
I wish you to use aircap to protect the flask next time
March 30, 2022
over 2 years ago
Rated 4 out of 5
Need a Bigger Flask
Flask needs to be bigger to prevent boil over. Otherwise, very good.
April 7, 2021
over 3 years ago
Rated 2 out of 5
Flask is too small for the job
As others have mentioned, this is not large enough. 500ml of starter is plenty for a 5 gallon batch, but boiling it in a 500ml flask is asking for trouble. Even if you only boil 400ml of wort in the 500ml flask there's almost no way to avoid a boil over since the flask is so small. Sure, you could use the suggested double boiler method--and that will catch your boil over and minimize any messes, but it's still likely to boil over, so why not just size up?
I make 500ml starters in a 1000ml size flask instead. I use low heat and place the flask right on my gas stove burner, no double boiler needed. It works very well.
March 2, 2017
Rated 1 out of 5
buy a bigger flask!
Guys (morebeer)
500 ml is TOO small for a yeast starter vessel.

I made a yeast starter using this product, followed the instructions and it blew the foil lid off the top and made a big mess.
Is my starter tainted?

More beer should rethink this product as a "starter kit".
and you should Take my lesson learned advice and buy the 1000 ml version.

I wish I could have my money back or trade this flask in for a 1000 ml.

Brad (making Pliny Clone) Smith

February 8, 2016
Rated 3 out of 5
Works fine
Has worked well for me but have now went with a bigger flask.
May 13, 2014