First RAPT overnight automation

[kohalajohn]

The plan is:

In the evening dough into cold water. The profile then starts and runs a 66c mash for one hour.

Then the next step is a 77c mashout for ten minutes.

Then the next step is to drop down to 55c for ten hours, overnight.

The reason for the 55c instead of back to 66c is to minimize electricity and evaporation. I've already mashed, so I don't need the 66c any more.

And if the mashout denatured the beta amylase enzymes, I should not have to worry about being below 66c

And I picked 55c as that should be just above what airborn bacteria could survive in.

Finally, I plan to find a way to have the pump turn off after the mashout. I don't think I need the pump running during the waiting period, overnight.

Your thoughts appreciated.

 

[kohalajohn]

The more I think about it, I should not really call it an overnight mash.

The mash is done in the evening. In the evening I start the profile with a mash, then a mashout. Then I come back to turn off the pump. The profile keeps the kettle warm overnight, and then next morning I finish it.

Doing a full volume overnight would be very straightforward.

 

[Jag75]

Just curious as to why you want to leave it overnight.

 

[mac_1103]

I picked 55c as that should be just above what airborn bacteria could survive in

That's well within the danger zone for food borne bacteria. Something over 60C would be better. Probably OK since the mashout will have pasterurized the wort and it's covered, but still not something I would go out of my way to do.

 

[kohalajohn]

That's well within the danger zone for food borne bacteria. Something over 60C would be better. Probably OK since the mashout will have pasterurized the wort and it's covered, but still not something I would go out of my way to do.

Thans Mac, I'll do 60c

 

[kohalajohn]

Just curious as to why you want to leave it overnight.

Convenience.

I don't see any brewing advantage from this. It's just that with modern electric automation, I don't feel like babysitting a batch that no longer needs babysitting.


This way I can automate the boring waiting parts, and enjoy the fun bits.

 

[Jag75]

Convenience.

I don't see any brewing advantage from this. It's just that with modern electric automation, I don't feel like babysitting a batch that no longer needs babysitting.


This way I can automate the boring waiting parts, and enjoy the fun bits.

I dont get the convenience of it. You still have to cool down , then transfer to your fv. I personally wouldn't allow wort to sit overnight . However, that's just me. Good luck

 

[kohalajohn]

I dont get the convenience of it. You still have to cool down , then transfer to your fv. I personally wouldn't allow wort to sit overnight . However, that's just me. Good luck

That’s what’s so good about this hobby. Everyone does it their way