Yeast Starter Size Post Boil

[VMCosco]

I have searched the forums and can't find this question specifically answered. Here is my starter process:

Measure 1L of water, pour into pot
Measure 100g of DME, stir into water
Boil 10 minutes
Pour into flask
Cool in sink ice bath
Resulting starter size = 800mL

Is this a 1L starter or an 800mL starter? Is my OG 1.038 (100g in 1L) or 1.048 (100g in 800ml)?

Thanks for the help

 

[bja]

Start with 1200 ml water.

 

[lespaul23]

Agreed, start with more water and boil down to 1L. I think you are right, I think you made a 1.047 gravity starter. It will be fine but is a little high.

 

[VMCosco]

Agreed, start with more water and boil down to 1L. I think you are right, I think you made a 1.047 gravity starter. It will be fine but is a little high.

Thanks for the thought. I only have a 1L flash at the moment so I will probably just do 800g in 1L of water.

It does seem odd that the conventional wisdom of 10:1 is a bit misleading when you account for boil off. Or am I misinterpreting the conventional wisdom?

 

[bja]

Or am I misinterpreting the conventional wisdom?

No, you're just making it way more complicated than it needs to be. In the end, it's not going to make any difference either way.