Adding yeast in end of the boil as nutrient for yeast at fermentation?

[Finlandbrews]

I asked a brewer if he adds nutrient at end of boil and he told me he doesnt but he does add yeast sometimes in the boil as a nutrient. Does that help? Or will it make the beer worse? And why?

 

[IslandLizard]

I've read somewhere (How to Brew?) that you could boil some yeast and add to the fermentor as a nutrient. Along those lines adding some yeast to your boil for the last 10 minutes should achieve the same.

Some commercial yeast nutrients you can buy here contain "yeast hulls," I guess they're a dried form of yeast perhaps?

In general, from what I understand, beer wort should already provide every nutrient yeast requires, such as Calcium, Magnesium, Nitrogen, Zinc. Now wine, mead, and cider are deficient in those basic minerals, so a yeast nutrient should be added to those.

That said, I always add a teaspoon of DAP (Diammonium Phosphate) to my beer wort at 10 minutes.
I also add 1/4 tsp of MgSO4 (Epsom Salt), 1/4 tsp of DAP, and a pinch of ZnCl2 per gallon of starter wort.

 

[CU_tony]

Some commercial yeast nutrients you can buy here contain "yeast hulls," I guess they're a dried form of yeast perhaps?

That's my understanding as well, and I imagine that what you would get after boiling yeast is yeast hulls.

 

[Mer-man]

The yeast hull products are freeze dried yeast that were killed at the height of laboratory induced health.

 

[Norselord]

There's zinc in yeast nutrient. From what I understand zinc is very important to healthy yeasties