Mash Extraction

[starseed]

Hi Guys I have a poor extraction rate , I make 20 litre batches using 4.5 kg of grain , the grind is 50/50 husk /powder, I step mash for 2 hours , 148/ 150/152 C. this should produce a 5% potential . but it only makes 3,6%

I have brewed for 5 years , this is a recent problem , so what,s wrong Pete

 

[VikeMan]

148/ 150/152 C.

???

Here are some ways to improve mash efficiency. One or more of them may apply to your situation, depending on your equipment/process:

•Crush Grains Finer
•Reduce Mash Tun dead space (redesign tun)
•Reduce or eliminate pump/hose losses.
•Batch Sparge instead of “No” Sparge
•Fly Sparge instead of Batch Sparge
•Use more total water, thus leaving “thinner” losses. But note that a longer boil would be required.
•Control Mash pH

If you describe your equipment and process in more detail, people can make more specific recommendations.

 

[day_trippr]

Greetings, Pete and welcome to Home Brew Talk!

[...]I have brewed for 5 years , this is a recent problem , so what,s wrong

What did you change?

Cheers!

 

[starseed]

Greetings, Pete and welcome to Home Brew Talk!



What did you change?

Cheers!

nothing !!!

 

[starseed]

???

Here are some ways to improve mash efficiency. One or more of them may apply to your situation, depending on your equipment/process:

•Crush Grains Finer
•Reduce Mash Tun dead space (redesign tun)
•Reduce or eliminate pump/hose losses.
•Batch Sparge instead of “No” Sparge
•Fly Sparge instead of Batch Sparge
•Use more total water, thus leaving “thinner” losses. But note that a longer boil would be required.
•Control Mash pH

If you describe your equipment and process in more detail, people can make more specific recommendations.

its a step mash , different temps

 

[doug293cz]

How did you raise the temp between mash steps?

Brew on

 

[day_trippr]

The bin of "Extract dropped but I didn't change anything" possible explanations - especially for a persistent impact - is not deep.

• grain mill gap slipped
• mash thermometer lost calibration

I got nothing beyond those...

Cheers!

 

[bracconiere]

so what,s wrong Pete

but as usual my sense of humor isn't funny around these parts...lol


how fast do you sprage? did you speed up to be in a hurry?

 

[willjamr]

Hi Guys I have a poor extraction rate , I make 20 litre batches using 4.5 kg of grain , the grind is 50/50 husk /powder, I step mash for 2 hours , 148/ 150/152 C. this should produce a 5% potential . but it only makes 3,6%

I have brewed for 5 years , this is a recent problem , so what,s wrong Pete

If your mash really is 148 to 152 *C* (centigrade or Celsius ) that will be WAY too hot and will wipe out
the enzymes that convert the starch to sugar.

 

[doug293cz]

If your mash really is 148 to 152 *C* (centigrade or Celsius ) that will be WAY too hot and will wipe out
the enzymes that convert the starch to sugar.

Can't get it that hot unless you have it in a pressure vessel.

Brew on