Grayish substance after sparging?

[THEUKRAINIAN]

Forum members, I encountered this grayish substance on the top of my spent grains after sparging, any clue as to what it is?

 

[CBMbrewer]

Proteins and lipids from the grain. More of this will precipitate out during the hot break. It's good that it didn't all make it into the kettle. No worries.

 

[THEUKRAINIAN]

Proteins and lipids from the grain. More of this will precipitate out during the hot break. It's good that it didn't all make it into the kettle. No worries.

Thanks! When sparging, I took the first few quarts and dumped them back into the mash tun a few times, I never did it before, but the additional filtering I guess was a good idea!

 

[JonGrafto]

Thanks! When sparging, I took the first few quarts and dumped them back into the mash tun a few times, I never did it before, but the additional filtering I guess was a good idea!

That's called vorlauf. Recirculating the first run runnings from your mash tun

 

[THEUKRAINIAN]

That's called vorlauf. Recirculating the first run runnings from your mash tun

Hmm, you learn a little every day! I never really did it before, but I'm glad I tried it. I have far less sediment in the bottom of my fermenter.

 

[PDX_T]

Good technique, good results, better beer.

 

[msa8967]

Just curious, are you using a false bottom, stainless steel braid or some other type of gain fliter?

 

[THEUKRAINIAN]

Just curious, are you using a false bottom, stainless steel braid or some other type of gain fliter?

I have a stainless steel false bottom