I’m a new brewer. New enough to NOT know enough about the process. My first brew was an all grain German Hefeweizen from morebeer.com. After boiling, I transferred the wort to my carboy, sat it in my sink with water and allowed it to cool to mid 70’s which took around 15 hours. The beer turned out just fine. Tasted exactly as expected. When I told the guys at the home brewing supply store what I did they nearly killed me. Said it is a big no-no and that you MUST cool your wort ASAP after boil. I’ve now “researched” this online only to be more confused than I was before I started researching.
Have any brewers actually tried both methods of cooling your wort? Does anyone with experience trying both methods have an opinion they’d like to share? By both methods I just mean cooling quickly Vs cooling slowly. I’ve had a few people give me their opinion only to later find out they have never actually tried both methods themselves. They were just relaying something they had read.
Either works, but I prefer to get it cold and into the fermenter as soon as I can. The biggest thing to always do is never pitch above your fermentation temp. Some like to pitch a degree or two below target, I generally pitch on target unless I over chill.
I do ice bath for small batches. I do this with the wort in the kettle. Do not add hot wort to a fermenter, especially glass. Full size batches are chilled with an immersion chiller and whirlpool pump.
Stevie, so your opinion, either method will work and your beer will taste the same with either method? I understand that the longer I allow the wort to be exposed to anything other than the yeast I risk infection and that is a reason to quickly chill, but some have said you risk an actual different flavor.
I guess the reality is, I’m lazy and would prefer to get the beer out of the kettle, let it cool and come back and pitch when it’s ready. I do take care to sanitize to avoid infection.
I cool my wort by putting the kettle in a big bucket with water in it. I also use a double wort chiller method. Where water goes into the first chiller that is in a bucket of ice water. Then it leads out to the second chiller in the wort. After few minutes, the water in the big bucket is warm, so I replace that with an ice bath. Last Saturday, I got the temperature of the wort down to about 61 degrees in about 30 minutes using these methods simultaneously.
In the winter time, I have sealed up the vessel the wort is in and let it sit out. It’s usually cold enough where there nothing that can get in it to ruin it. I had reach target temperature in about four hours.
I hope this helps!
Cooling quickly helps to set proteins which drop out of suspension. It is said that those proteins are detrimental to stability and flavor if left behind, but I’ve never performed a side by side.
I think the biggest issue with a slow cooling process like you described is that you’re giving any wild yeast or bacteria that may have made it into your wort or carboy plenty of time, food and ideal temperature to multiply without competition from a heavy pitch of your desired yeast.
SAFETY - do not put boiling/hot wort into a glass carboy. That is a recipe for a cracked carboy and potentially leading to a hospital visit. You need to find a way to chill your wort PRIOR to adding it to your fermentor.
I do the same thing you’re doing with a slow cool down.
A few things -
Like the previous poster stated, the big area of concern is hot liquid in plastic. Sure there’s the risk of plastic taste but more importantly is your own safety if the plastic melts and boiling hot liquid gets all over you. It’s not smart. Cool down the wort to around 100 before transfer to your carboy.
Regarding the yeast thing - catching wild yeast is optimal around 120 to 90 degrees as the wort cools down. You want to cool the wort from that 120 to 90 degree temp very slowly when harvesting directly into wort. I guess just keep that in mind. You want to make that transition from 120 to 90 or so very quickly. I would also highly encourage you to keep a loose cover (aluminum foil) over the wort - I do the same method with my starter. Don’t airlock it but let air through.
Finally, the proteins thing is probably valid. But then again I’m really questioning the science of this craft a lot lately. I just met a guy who ferments his Hefe for 4 days and then carbs the hell out of it and takes best in shows where BJCP judges are plentiful. Ridiculous. It’s made me really dismiss traditional belief and question everything. If you do side by side tastes and the no chill method works for you, by all means keep plugging along.
An immersion chiller is pretty easy and cheap to build. It’s best to get the wort cool as quickly as possible, but as was mentioned, you don’t want to pitch the yeast until the wort is at or very close to your targeted fermentation temp (that, for my preference for most ales, is 64 degrees).
During the warmer months I almost always have to let the wort reach that temp overnight and pitch the next morning because I can only get the wort down to about 80 degrees with city water.
I have a 2-basin sink that is mounted under the counter with a removable faucet. I put my kettle in one basin that is filled with water, then stick the faucet in the basin pointed at the kettle, and run cold tap water into that basin continuously. The warmer water flows away over the top into the second basin and drains from there.
This works under the same premise as an immersion chiller, but is a little slower since it has a lower surface area. Still, for my batch sizes it gets me down to pitching temps in about 30-45 minutes. I’d like it to be a little quicker, but I’ve honestly never had any issues and still get a good cold break. I’m not sure what your home setup is, but this works decently well for a small-batch/kitchen brewer.
Pretty much what I do. Even if you only have one sink the method still works as water will drain into the overflow.
You can chill faster by freezing water bottles the day before and dropping those unopened into the hot wort. Or keep wort volume a few pints under target and top up with near-freezing water during the chill.
20 yrs ago when I started I’d put the entire kettle in a bathtub ice bath. Now I use an immersion chiller to get it close in the kettle, rack to a stainless fermenter and set it in a spare fridge I’ve designated my ferment chamber. It is controlled with an Auber TD 400 P. I tape a wad of shop towels on the side of my fermenter to insulate/isolate the temp probe which controls the on off cycle of the fridge. Once my wort is cool enough I pitch my yeast.
Just to re-emphasize, this practice is extremely scary. As someone else mentioned this could very easily cause you a broken carboy abd lost batch at best, a trip to the hospital or even death. I had a friend who got very close to death from breaking a toilet he was moving once and the same thing can happen with a carboy. I have also been very lucky, I once slipped and fell on a carboy and nearly lacerated my leg near an artery. Carboys are NOT tempered for heat and you got really lucky that is didn’t break when you added boiling hot wort to carboy let alone tried to heat exchange the non-tempered glass in a kitchen sink. I would highly recommend not trying that again. Ever.
I want to start by saying that I have not personally used both methods however one of the guys in my local homebrew club has recently switched to no chill and his beers are still consistently great. The key seems to be that you should use a sealed HDPE cube for chilling and then aerate and transfer to the fermenter once it reaches temp.
There is an exbeeriment conducted over at brulosophy where he actually compares the no chill method in blind triangle tests. I have provided a link to this as well as another brewer who switched to no chill without telling anyone to see if his friends/beer judges would notice.
I bought a Hydra chiller last year, and I connect it to my old chiller in a brew pot full of ice cubes, and run the water through the ice cube pot before the Hydra. Cools things down from boiling to pitching temp in around 10 minutes or less. I like my Auber temp controller for my 10 cu ft refrigerator fermentation chamber too. I use my old Johnson controller with a chest freezer for lagering.