Kettle Lid on or off
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Kettle Lid on or off
Yesterday I attended a home brew course ran a local microbrewer, when the time came to build the wort he did so with the lid on the boiler. When I mentioned to him on what I had read from this and other forums about the posible formations of nasties forming the the wort(cannot remember the correct name for them) he stated that it was rubbish or myth. His microbrewery and main breweries don't have lids to remove whilst boiling the wort. So my question is which is correct Lid on or Off?
Re: Kettle Lid on or off
i usually boil with the lid off, as, like you, i've read about issues with DMS etc.
did the microbreweries' boiler have an extractor pipe attached to the lid? as far as i'm aware, as long as there is somewhere for the evaporation to escape, DMS is less likely to be an issue?
did the microbreweries' boiler have an extractor pipe attached to the lid? as far as i'm aware, as long as there is somewhere for the evaporation to escape, DMS is less likely to be an issue?
Planning: BrewEasy system build; possibly a Wychwood Hobgoblin Gold clone
Fermenting: Simcoe SMASH
Drinking: Cascade Centennial Pale
Fermenting: Simcoe SMASH
Drinking: Cascade Centennial Pale
Re: Kettle Lid on or off
I've certainly seen 10/12bbl micros with no more than a 6" pipe running without a fan straight out. Most stuff must surely drip back onto the wort. Due to my excessive boil (boiling as I do, in twin pots) I leave lids on until the last 30 mins or so, and even that may be more than enough.
Busy in the Summer House Brewery
Re: Kettle Lid on or off
Many breweries' coppers are enclosed, but they are all vented and this is how the dms escapes.
The man you spoke to is misinformed.
The man you spoke to is misinformed.
Re: Kettle Lid on or off
It is pretty much a non-issue with UK Pale malts but if you use a lot of pilsner malt there is a small chance.
There is of course more options than on or off. You can have it partially on to get a more vigourous boil and let out the precursors of DMS.
There is of course more options than on or off. You can have it partially on to get a more vigourous boil and let out the precursors of DMS.
Re: Kettle Lid on or off
DMS issues aside, I leave mine on when coming up to temperature to get the temp up quicker and then I am sure to take it off before reaching a vigorous boil, as boiling with the lid on is quite a good way to cover the kitchen floor in sticky wort. Which, I am told, is also a good way to have your brewing moved to a cold shed!
Funny isn't it that this "craft beer revolution" has got quite a lot of people who definitely aren't experts running breweries.
Funny isn't it that this "craft beer revolution" has got quite a lot of people who definitely aren't experts running breweries.
Re: Kettle Lid on or off
I solute the last post as at the brewing club where I brew my pal leaves the lid on until the last moment as the Braumeister struggles to get from 95-100 with the lid off. But time it wrong, and I had a close shave, and you will be spending a fair while trying to clean up boil over wort.
Re: Kettle Lid on or off
I always boil with the lid off only because thats what i have read you are supposed to do
I always leave the lid on till i get a good foam forming and its just starting to boil then the lid comes off for the duration. I have only had one boil over when i used to boil in the garage (luckily) and it indeed did make a mess as the wort down the sides of the vessel had an hour to get really sticky!!
The point about DMS as i understand it is i dont really . Some litterature says you must not cover, others say you can cover as long as you have some sort of extraction and others say it does not matter.
I see some extraction systems where there will definetly be some condensate dropping back into the boil, so i wonder if as long as a good portion of the steam/vapour can escape a little condensate dropping back in does not matter??
I always leave the lid on till i get a good foam forming and its just starting to boil then the lid comes off for the duration. I have only had one boil over when i used to boil in the garage (luckily) and it indeed did make a mess as the wort down the sides of the vessel had an hour to get really sticky!!
The point about DMS as i understand it is i dont really . Some litterature says you must not cover, others say you can cover as long as you have some sort of extraction and others say it does not matter.
I see some extraction systems where there will definetly be some condensate dropping back into the boil, so i wonder if as long as a good portion of the steam/vapour can escape a little condensate dropping back in does not matter??