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Old 03-18-2014, 01:14 AM   #11
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Okay...

My estimated OG according to beersmith is 1.084, but the measured OG is 1.046...

Which one do I go by? Also, again, if I have a 1.5 liter starter, am I putting 1.5 liters of water in the saucepan along with however much dme that equates to? What is that - 150 grams?

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Old 03-18-2014, 01:19 AM   #12
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Originally Posted by mbobhat View Post
1 quart is approx. 1 liter, or 4 cups (not 2 cups )
True, but most 1L starter recipes that I've found call for 2 cups of water and .5 cup of DME which only yielded about 600ml if I remember correctly. Which is why I don't understand why they call it a 1L starter if I'm only putting 2 cups of water...
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Old 03-18-2014, 02:25 AM   #13
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Originally Posted by kenpotf View Post
Okay...

My estimated OG according to beersmith is 1.084, but the measured OG is 1.046...

Which one do I go by? Also, again, if I have a 1.5 liter starter, am I putting 1.5 liters of water in the saucepan along with however much dme that equates to? What is that - 150 grams?
With Beersmith, the measured OG is what you actually measured with a hydrometer or refractometer when brewing the batch. The number will remain the same until you physically enter the actual reading. 1.046 sounds like a pre-boil gravity reading. Also, if you purchased a 1 liter starter kit, the flask is 1 liter so the recommended amount is 2 cups (or a half liter) because you'll have a volcano if you fill it. I started with that & quickly changed to a 3 liter flask after one hell of a mess!
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Old 03-18-2014, 03:19 AM   #14
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So how many cups do you use for a 1.5L starter if you use two cups for a 1L? I was going to buy a 2L flask tomorrow, but I have no clue how much water I'll need to fill it for a 1.5L starter.

When I'm making my starter, do I base it off of the estimated OG or measured OG in beersmith?

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Old 03-18-2014, 03:30 AM   #15
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Wait a sec...I think the lightbulb just came on (I could be wrong).

If I have a 1.5L starter, and I want to use 1.5L of water, I would need 150g of DME.
If I have 1L starter, and I wanted to use 600ml of water, I would need 60g of DME.
If I have a 2L starter and want to use 1300ml of water, I would need 130g of DME.

This all ratio based, and technically should keep the fg between 1.030 to 1.040 for all of the above. Does that sound right?

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Old 03-18-2014, 03:00 PM   #16
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Originally Posted by kenpotf View Post
Wait a sec...I think the lightbulb just came on (I could be wrong).

If I have a 1.5L starter, and I want to use 1.5L of water, I would need 150g of DME.
If I have 1L starter, and I wanted to use 600ml of water, I would need 60g of DME.
If I have a 2L starter and want to use 1300ml of water, I would need 130g of DME.

This all ratio based, and technically should keep the fg between 1.030 to 1.040 for all of the above. Does that sound right?
I think you've got it.
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Old 03-18-2014, 03:03 PM   #17
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Also, not to say others weren't correct in trying to get your batch details before answering your question, but I've noticed HBTers sometimes don't like talking about theory much when asked a generic question and want to answer a specific real life question. As if all brewing questions are related to exactly what I'm going to do on my next batch.

That said, you will get more yeast cells by first making a 1L starter and then stepping it up to a 2L starter than you would just making a 2L starter from the get go.

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Old 03-18-2014, 03:14 PM   #18
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That said, you will get more yeast cells by first making a 1L starter and then stepping it up to a 2L starter than you would just making a 2L starter from the get go.

Why is this? I have always wondered why the step up is necessary.

I have a 2L flask so I always just make a 1600ml starter from the jump, typically the night before so that the yeast is already active when I pitch.
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Old 03-19-2014, 04:08 AM   #19
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Why is this? I have always wondered why the step up is necessary.

I have a 2L flask so I always just make a 1600ml starter from the jump, typically the night before so that the yeast is already active when I pitch.
If you're getting your target number of cells with a single stage then there's no need for the step up, but you can get more cells using less DME using steps if you need a large increase in cells.

For instance, I bought a pack of Wyeast that was from November. Instead of making my typical 4L starter I'm making a 1L first and will check where that gets me as far as cell count and make another starter to hit my cell count target. The calculator told me I only had 16B cells left in that pack and dumping them in a 4L starter wouldn't have gotten me where I needed to be and would have been a waste of DME.
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