Author Topic: What ratio of DME to water do you use for your starter?  (Read 1445 times)

Offline syncopadence

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What ratio of DME to water do you use for your starter?
« on: January 04, 2016, 03:30:27 PM »
One guy I talk to a lot that makes great brews uses 10g DME per 10mL, and this site recommends 1g/10mL.  Just curious what everyone uses, and/or their opinions on these recommendations?

Offline Stevie

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Re: What ratio of DME to water do you use for your starter?
« Reply #1 on: January 04, 2016, 03:35:46 PM »
100g mixed with water to yield 1L (1000ml). So, 1g/10ml

Offline JT

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Re: What ratio of DME to water do you use for your starter?
« Reply #2 on: January 04, 2016, 03:38:31 PM »
I'm definitely in the latter camp!!!
https://www.wyeastlab.com/hb_makingastarter.cfm

Offline ccfoo242

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Re: What ratio of DME to water do you use for your starter?
« Reply #3 on: January 04, 2016, 03:51:32 PM »
That's like 2lbs per gallon of water. I bet he does 1g to 10ml and just wasn't thinking when he said 10.
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Offline toby

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Re: What ratio of DME to water do you use for your starter?
« Reply #4 on: January 04, 2016, 04:00:39 PM »
I would assume that it was just an error in his statement.  1g/10mL is about 3/4 of a dry cup per liter of water.  10g/10mL is going to be about 7.5 dry cups in a liter.  That's a really high gravity starter.

Offline klickitat jim

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Re: What ratio of DME to water do you use for your starter?
« Reply #5 on: January 04, 2016, 04:07:39 PM »
I made a bunch of 5% yesterday  5g DME 100ml Water plus pinch of nutrients.

Offline factory

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Re: What ratio of DME to water do you use for your starter?
« Reply #6 on: January 04, 2016, 04:17:44 PM »
I use 75g DME per 1L of water, so I guess that works out to be .75g per 1mL.  If I recall correctly, that puts me in the 1.030ish range.

Offline syncopadence

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Re: What ratio of DME to water do you use for your starter?
« Reply #7 on: January 04, 2016, 04:27:16 PM »
Thanks guys, sounds like he meant to say 1g instead of 10. I'll stick to that.

Offline hopfenundmalz

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Re: What ratio of DME to water do you use for your starter?
« Reply #8 on: January 04, 2016, 04:30:29 PM »
I use 75g DME per 1L of water, so I guess that works out to be .75g per 1mL.  If I recall correctly, that puts me in the 1.030ish range.
75g/1L=75g/1000ml=.075g/ml
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Offline factory

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Re: What ratio of DME to water do you use for your starter?
« Reply #9 on: January 04, 2016, 04:41:14 PM »
I use 75g DME per 1L of water, so I guess that works out to be .75g per 1mL.  If I recall correctly, that puts me in the 1.030ish range.
75g/1L=75g/1000ml=.075g/ml
Math in public, gets me every time, meant to write .75g per 10mL.

Offline klickitat jim

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Re: What ratio of DME to water do you use for your starter?
« Reply #10 on: January 04, 2016, 04:48:42 PM »
LOL

It took me a while for it to sink in, but I like S Cerv's way of communicating it by percentage. 5% means 5g per 100ml. Less confusion in the calcation that way. Pretty easy to remember that % means per hundred. Then you just times by 4 to ballpark the gravity. 5g per 100ml = 5% = 5ºP = 1.020 So, 7.5% = 7.5ºP = 1.030 and 10% = 10ºP = 1.040
« Last Edit: January 04, 2016, 04:52:10 PM by klickitat jim »

Offline denny

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Re: What ratio of DME to water do you use for your starter?
« Reply #11 on: January 04, 2016, 05:02:24 PM »
One guy I talk to a lot that makes great brews uses 10g DME per 10mL, and this site recommends 1g/10mL.  Just curious what everyone uses, and/or their opinions on these recommendations?

.75 oz./cup for 1.035
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Offline beersk

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Re: What ratio of DME to water do you use for your starter?
« Reply #12 on: January 04, 2016, 05:14:41 PM »
I do around 3.5oz per quart of water, usually, which is basically the same as 100g per liter.
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Offline charles1968

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Re: What ratio of DME to water do you use for your starter?
« Reply #13 on: January 04, 2016, 08:02:39 PM »
I do 50g in 500ml. The ratio is 1:10 but percentage is actually 9% (50g/550g = 0.091).

If you're trying to coax an old yeast sample back into life, lower gravity might help as it's less of an osmotic shock. However, less malt extract means less yeast cells in the starter as all the yeast biomass comes from the malt.

Offline klickitat jim

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Re: What ratio of DME to water do you use for your starter?
« Reply #14 on: January 04, 2016, 09:29:58 PM »
I do 50g in 500ml. The ratio is 1:10 but percentage is actually 9% (50g/550g = 0.091).

If you're trying to coax an old yeast sample back into life, lower gravity might help as it's less of an osmotic shock. However, less malt extract means less yeast cells in the starter as all the yeast biomass comes from the malt.
Only if you are concerned with total count though. If you are merely trying to get the yeast into log phase and "some" growth, its less of a concern. Which is how I've been using my starters. Also eliminates a need to count, which has always made me scratch my head. How many homebrewers fuss over the very optimal way to increase cell count, yet they have never counted...