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Yeast starter

Discussion in 'General Brewing Techniques' started by Goodbeer, 24/7/15.

 

  1. jc64

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    Posted 27/7/15
    Sounds fair.I was responding to what Goodbeer had already done though and in that scenario I would decant and pitch. If it was me I would just use dry yeast :ph34r:
     
  2. danestead

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    Posted 27/7/15
    I add wyeast nutrient to my starters when I can be bothered/remember. According to wyeast (i emailed them) you use 0.1g per litre of starter. That is easy to remember as it is the same rate at which you add it to your boil. I add it prior to boiling the starter to sterilise it. Don't add it once the starter is boiling as you might get a boil over!
     
  3. slcmorro

    87 Warning Points. Bad Boy!

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    Posted 27/7/15
    0.1 gm of nutrient per litre will cause a boilover? Surely not...? Unless you've got 1.9L in a 2L flask, which would surely boilover anyways :p
     
  4. Danscraftbeer

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    Posted 27/7/15
    Beer has enough vitamins, minerals and nutrients. The less additives and more organic the better as with many of good consumption.
     
  5. manticle

    Standing up for the Aussie Bottler

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    Posted 27/7/15
    Actually it is lacking in some sufficient minerals like zinc. Yeast nutrient is mostly zinc and some other natural products. Nothing nasty getting added unless you think like the food babe (in which all chemicals are bad).
     
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  6. Judanero

    Yeast maketh the beer.

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    Posted 27/7/15
    I think he means while it's boiling don't add nutrient... I have done it and can confirm there is indeed a boil-over!
     
  7. jc64

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    Posted 27/7/15
    Could use a copper immersion chiller to get the zinc :D
     
  8. Tropico

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    Posted 27/7/15
  9. Rocker1986

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    Posted 27/7/15
    It does going by the 0.1g per litre dosage mentioned earlier.

    One thing I hate is measuring weights in volume measurements like teaspoons. 1/2 a tsp will weigh different depending on what is in it.. It's like saying add 100mL of dry malt to every kg of water. I know it's old fashioned and largely due to the Yanks clinging onto an outdated system but seriously how hard is it to measure weights with weight measurements? :rolleyes:
     
  10. slcmorro

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    Posted 28/7/15
    I still don't get it. Even adding 0.5gms to a massive 5L starter while boiling it (if for some reason you didn't step to 5L in the first place) I can't see how it'd cause a boil over. Not a big deal, just can't fathom it.
     
  11. mofox1

    Wubba lubba dub dub!

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    Posted 28/7/15
    Quick experiment for you... boil some water in a mug in a microwave. Take it out and throw a teaspoon of sugar in it. Boom!

    Same thing happens with boiling up your malt extract - plenty of nucleation points for bubbles to form.

    I unintentionally did it the other day. Forgot the nutrient, so took it off the boil and left it for a couple of minutes (okay, maybe just one minute). Dropped my tiny 1/10 teaspoon measure of nutrient in and it *still* gushed over the top. Just not as bad as the first (and only other) time I did it while it was still actively boiling. Thank god the missus wasn't home for that one.
     
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  12. danestead

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    Posted 28/7/15
    That's really interesting. Maybe worth emailing wyeast again.

    I can 100% confirm they told me 0.1g/L of nutrient for your starter. Zinc toxicity would probably be pretty up there if you were adding 10x that, as said in an earlier post.
     
  13. danestead

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    Posted 28/7/15
    K. Try it.
     
  14. Tropico

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    Posted 28/7/15
    Its sounds like a mistake, they also say 1/2 tsp (2.2gm) per 5 gallons of wort (19 litres).

    So 0.1gm would be the same ratio.
     
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  15. slcmorro

    87 Warning Points. Bad Boy!

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    Posted 28/7/15
    Mofox1 already suggested this. I'll take your words for it - didn't mean to come across pompous, I was just in disbelief. Didn't think that tiny amount could cause a volume (mass?) so much larger to react in that way.
     
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  16. Screwtop

    Inspectors Pocket Brewery

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    Posted 29/7/15
    Anyone know of any craft brewery using yeast nutrient?


    Screwy
     
  17. Vini2ton

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    Posted 30/7/15
    I've started using a pressure-cooker and 500ml preserving jars to make starter wort. I put the very slightest pinch of nutrient in each jar. I don't know if I need to. I have the odd berocca myself at times and **** knows if they do me any good. My starters boom though.
     
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