[wildknight]

When is best to add yeast nutrient?  In the wort boil?  After the wort is cooled?  Only in the starter?  When you pitch yeast?

I ask because of an observation of my starter wort.  I boiled it in a glass flask last time instead of a SS pot, and I notice the wort got very dark.  I know melanoidins form as you boil the wort, but this seemed excessive.  I checked my yeast nutrient, and it has a lot of DAP in it.  I know that people making syrups also use DAP in making dark Belgian candy syrups.  I am wondering if the DAP I added to my starter wort caused the excessive darkening, resulting in the DAP being sequestered into melanoidins and no longer available to the yeast a free nitrogen.  Maybe I should add it at the end of the boil, or once it is cooled? 

[denny]

I have no idea if the DAP caused the darkening, or if the darkening matters at all.  I use Wyeast yeast nutrient in both my starters and the kettle.  I boil my starters for 10 min. with nutrient in the whole time.  In the kettle I use 1/2 tsp. for the last 10 min. per instructions.

[skyler]

I do exactly as Denny described, except sometimes I throw the nutrient in at 15 min, for no particular reason.

[bo]

I feed my yeast fresh wort and they gobble it up.

[DaveR]

I oil my starters for 10 min.

It took me a second before I realized it was a typo. At first I thought it was some new technique with which I wasn't aware. 

I add the Wyeast powdered nutrient in starters and Servomyces in the boil for most batches. I'm wondering if I really need to use Servomyces or if I can just use the less expensive powdered nutrient instead. I'm not sure what the differences are. I once used them hit and miss. Now I use them all the time. Nutrients do seem to help quite a bit.   

[morticaixavier]

I oil my starters for 10 min.

It took me a second before I realized it was a typo. At first I thought it was some new technique with which I wasn't aware. 

I add the Wyeast powdered nutrient in starters and Servomyces in the boil for most batches. I'm wondering if I really need to use Servomyces or if I can just use the less expensive powdered nutrient instead. I'm not sure what the differences are. I once used them hit and miss. Now I use them all the time. Nutrients do seem to help quite a bit.   

I am pretty sure it was a typo but there is a technique, not much held by homebrewers anymore as far as I know, that involves putting olive oil in the starter to provide the yeast with lipids. This allows you to lessen or even skip the aieration step and supposedly increases shelf life. I beleive some large scale pro brewers do use this as it closes up a quality loss door in long term storage/transporation.

[bo]

I oil my starters for 10 min.

It took me a second before I realized it was a typo. At first I thought it was some new technique with which I wasn't aware. 

I add the Wyeast powdered nutrient in starters and Servomyces in the boil for most batches. I'm wondering if I really need to use Servomyces or if I can just use the less expensive powdered nutrient instead. I'm not sure what the differences are. I once used them hit and miss. Now I use them all the time. Nutrients do seem to help quite a bit.   

I am pretty sure it was a typo but there is a technique, not much held by homebrewers anymore as far as I know, that involves putting olive oil in the starter to provide the yeast with lipids. This allows you to lessen or even skip the aieration step and supposedly increases shelf life. I beleive some large scale pro brewers do use this as it closes up a quality loss door in long term storage/transporation.

oil  S/B  boil

[denny]

I oil my starters for 10 min.

It took me a second before I realized it was a typo. At first I thought it was some new technique with which I wasn't aware. 

Thanks for pointing that out!  Wouldn't want anyone to think I was talking about olive oil.

[denny]

I am pretty sure it was a typo but there is a technique, not much held by homebrewers anymore as far as I know, that involves putting olive oil in the starter to provide the yeast with lipids. This allows you to lessen or even skip the aieration step and supposedly increases shelf life. I beleive some large scale pro brewers do use this as it closes up a quality loss door in long term storage/transporation.

AFAIK, no commercial breweries are actually doing this.  My understanding is that results of the study at New Belgium found a shorter shelf life.  If anyone knows differently, please correct me.

[bluesman]

I have no idea if the DAP caused the darkening, or if the darkening matters at all.  I use Wyeast yeast nutrient in both my starters and the kettle.  I boil my starters for 10 min. with nutrient in the whole time.  In the kettle I use 1/2 tsp. for the last 10 min. per instructions.

+1 to Denny's method... except I add 1 full tsp to the boil.

[denny]

I have no idea if the DAP caused the darkening, or if the darkening matters at all.  I use Wyeast yeast nutrient in both my starters and the kettle.  I boil my starters for 10 min. with nutrient in the whole time.  In the kettle I use 1/2 tsp. for the last 10 min. per instructions.

+1 to Denny's method... except I add 1 full tsp to the boil.

Are you doing 10 gal. batches, Ron?

[bluesman]

I have no idea if the DAP caused the darkening, or if the darkening matters at all.  I use Wyeast yeast nutrient in both my starters and the kettle.  I boil my starters for 10 min. with nutrient in the whole time.  In the kettle I use 1/2 tsp. for the last 10 min. per instructions.

+1 to Denny's method... except I add 1 full tsp to the boil.

Are you doing 10 gal. batches, Ron?

1 tsp per 5 gal batch

[denny]

1 tsp per 5 gal batch

What nutrient are you using?  The Wyeast I use recommends 1/2 tsp. per 5 gal.

[bluesman]

1 tsp per 5 gal batch

What nutrient are you using?  The Wyeast I use recommends 1/2 tsp. per 5 gal.

I'm using Wyeast...I think it's the nutrient blend. I've always used 1 tsp based on a recommendation from JZ.

[denny]

1 tsp per 5 gal batch

What nutrient are you using?  The Wyeast I use recommends 1/2 tsp. per 5 gal.

I'm using Wyeast...I think it's the nutrient blend. I've always used 1 tsp based on a recommendation from JZ.

Hmmmm...hadn't heard him say that.  Maybe I'll try that on my next batch and see if I can tell a difference.