Yeast starter boil over

Discussion in 'Beginners Brewing Forum' started by ihideinyoursocks, Jul 11, 2020.

  1. ihideinyoursocks

    ihideinyoursocks New Member

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    Hey folks,

    Does anyone have any tips on preventing boil overs when making a yeast starter? I'm using a 2000mL erlenmeyer flask to boil and ferment the starter. The flask came with a receipe for a starter that calls for:

    1.75 cups DME
    1 pinch Fermaid K
    1800mL of water

    But when I follow the receipe it seems like nothing I do stops the boil over except taking the flask off the burner. I've tried stirring, reducing the heat, and water spray bottle, all with no effect. Has anyone else had similar issues, and been able to fix them?
     
  2. Ozarks Mountain Brew

    Staff Member

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    Ask Google it's the same product as boil over on a kettle, i think I got mine from morebeer
     
  3. J A

    J A Well-Known Member

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    Why do you have to boil it in the flask? Just make the starter wort in a pot, cool it and pour into a sanitized flask.
     
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  4. ihideinyoursocks

    ihideinyoursocks New Member

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    I got the flask with the understanding that it would be able to boil, cool, and ferment the starter all in one vessel. That seemed very convenient due to both the smaller clean up, and reduced risk of contamination. Plus, aside from my brew kettle, I don't have great pots. What I have all came as a set of cheap nonstick cook wear, that is now very old and worn. Don't really want to brew anything in a pot with scratched nonstick coating. Once I finish replacing the pots, that would be a viable option though.
     
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  5. thunderwagn

    thunderwagn Well-Known Member

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  6. Bubba Wade

    Bubba Wade Well-Known Member

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    You can try a heat diffuser. They are cheap. I have one for my camp stove due to its limited ability to simmer. 2C70A2EF-CC66-4972-927B-6E63D6CF2E87.jpeg
     
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  7. Craigerrr

    Craigerrr Well-Known Member

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    To do a 2 liter starter you really should use a 5 liter flask.
    The hot break will be there no matter what you boil in.
    Maybe do a 1 liter starter, and as it approaches boil turn the heat down until you get past the hot break.
    A very low boil for 5 minutes should really be sufficient to kill any bad guys.
     
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  8. philjohnwilliams

    philjohnwilliams Well-Known Member

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    I found for me it was faster to deal with the cleaning of a pot than to deal with cleaning up a boil over. Another plus was that if I was not boiling in my flask I didn't need to buy the more expensive borosilicate glass flasks. My last 2l glass erlenmeyer cost less than $10.
     
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  9. jmcnamara

    jmcnamara Well-Known Member

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    make your process fit you, not you fit the process
     
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  10. BOB357

    BOB357 Well-Known Member

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    Ideally, you need a container that's at least 1.5 times the volume of your starter. If you don't want to spring for that, Fermcap-S works great The same applies to kettles and fermenters. 1 drop in a 2 liter starters all but eliminates foaming in starters. For fermenters and boil kettles, 2 drops/gallon. Fermcap-S is cheap. Be sure to refrigerate it.

    You have 2 choices. Get a bigger flask or use Fermcap-S.
     
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  11. Nosybear

    Nosybear Well-Known Member

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    I use both the 2 and 3 liter Erlenmeyer flasks. As long as I don't go over the nominal volume and turn the flame to low before too much hot break forms, no problems.
     
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  12. Trialben

    Trialben Well-Known Member

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    I boil in the flask one thing you can try is add your 200 ish gram DME to 1lt of water heat this untill you hit the break boil this for a minute or two until it's dissipated. boil the jug kettle whatever you call it then add 1lt boiling water to bring up to the 2lt volume maybe a tad over to allow for shrinkage.
     
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  13. J A

    J A Well-Known Member

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  14. thunderwagn

    thunderwagn Well-Known Member

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    Dang! That's cheaper than a flask!
    I get it though wanting to do everything in the same container. Might just need to change your strategy up some. I purchased a 1l flask to do 1l starters. It's basically worthless to me for that. Live and learn I guess!
     
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  15. BOB357

    BOB357 Well-Known Member

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    Looks just like one of the smaller ones that I got in a set of 4 from Cabelas for about $35 when I started brewing. Think the sizes were 1, 2,3 and 5 gallons. I really need to repurpose them since they're just collecting dust.
     
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  16. J A

    J A Well-Known Member

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    I got a set that's a little smaller from Harbor Freight for $20. I think the biggest is 3.5 gallons. I made a lot of beer in those pots including my first all-grain/biab batches. They find a use every now and then but mine get a little dusty, too. ;)
     
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  17. BOB357

    BOB357 Well-Known Member

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    I used the biggest one for extract brewing for a couple of years and then a couple of them for heating sparge water. Since moving to the Digiboil they've all just been sitting around. Should probably be using one for sparge water instead of the wife's Tfal tamale pot. Sparge water now is 2 to 2 1/2 gallons. Maybe use the biggest one for bringing in veggies from the garden.
     
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  18. J A

    J A Well-Known Member

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    Yeah, I did the same. All the while that I had my 5-gallon recirc system set up, I'd use the biggest one to heat sparge water and then just set it on my brew cart to pump out. I use one now to cook rice for my adjunct brews.
     
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