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8

You don't want to clean a copper chiller so it is shiny - if you remove the dull color (stable oxide), the metal is more likely to react and form the toxic blue-green oxide (verdigris). http://byo.com/stories/projects-and-equipment/item/1144-metallurgy-for-homebrewers Copper is relatively inert to both wort and beer. With regular use, it will build up ...


7

Q1) No chance of off flavors just from this. Q2) Yes, this is normal. The post boil gravity will always be higher than pre boil because of the water lost to evaporation. In your case about 12% of the water was boiled off, resulting in a 12% increase in gravity. Assuming a 5 gallon batch, you boiled off about 0.6 gallons.


6

As a suggestion: Heat your beer to 70 deg. Celcius (sorry, I'm metric and don't do Church-of-England units but I'm sure you can convert it to Farenheit yourself) in order to kill yeast and bacterial infection. About 10 mins at 70 deg. C should do the trick. This will also decarbonate your beer. Cool as quickly as possible, and watch out for hot side ...


4

Great question on a topic that I don't think is discussed much by homebrewers since we tend to stick to ales. This is a more significant issue for creating clean lagers..or at least a more obvious problem in lagers when present. Greg Noonan's New Brewing Lager Beers is about the only place I've found a solid discussion of the topic. On pp 170-171: "...


4

A cheesy smell usually means you have bacteria in your mash and they have access to oxygen. If this were a sour-mashed beer it would be considered a lost cause at this point. I don't know how this kit is supposed to work, but it's sounds like sanitation is the issue.


4

Technically, you can use baker's yeast, but I doubt you'd be as happy as you would by using brewer's yeast. Both yeasts are Saccharomyces cerevisiae, however, they are different strains of the same species that are bred to do two different jobs. Baker's yeast has been bred to produce CO2 and cause bread to rise and brewer's yeast has been bred to survive ...


4

Grats on your first brews! Sounds like yeast stress esters from possibly under pitching or lack of oxygen, maybe even autolysis if it's sitting in a primary for 3 weeks. Suggestions: Use a yeast calculator. Single pack or vials are usually only enough up to about 1.040 OG. Use a starter to grow a proper pitch or use multiple packs. Oxygenate your wort. ...


4

First, technically all beer is infected, since you pitch yeast. To be pedantic, what you're talking about is contamination. And yes, I'd say pretty much all homebrew (and even commercial beer) is contaminated to some extent. The type and severity of the contamination can vary, however.


4

Hops stored in a sealed packet in a fridge should be alright to use - even if the rest of the fridge is "crawling" with bugs. I say this because the hops grew in the open air and since picking have not been treated with anything "antibacterial" or "anti-fungal" (or should not have been). They are just dried and stored and sold. So the hops themselves are not ...


4

Diacetyl is used as a food flavoring and is safe to ingest, It is not safe to inhale diacetyl when heated and/or vaporized, and causes popcorn lung. https://www.fda.gov/Food/IngredientsPackagingLabeling/GRAS/SCOGS/ucm261273.htm There is no evidence in the available information on diacetyl or starter distillate that demonstrates or suggests reasonable ...


3

As Pepi noted in the comments it would take a serious infection to be noticeable in 24 hours (Just think how long it takes yeast to get going and that is supplied into fermentable at a huge number of cells. First and foremost I recommend moving to an acid based no-rise sanitiser. Starsan is the common brand but other unbranded and just as good alternatives ...


3

This sounds like it could be chlorophenols (typically perceived as plasticky / band-aids / medicinal / chemical flavors). If you're not using Chlorine-based sanitizers, this may have been caused by a wild yeast or bacterial infection. The fact that you also noted flocculation (cloudy) and carbonation issues is generally in line with the notion of an ...


3

This Wired article may help shed some light on wavelengths and bottle colour. http://www.wired.com/2013/03/physics-and-green-beer-bottles/ Amendment 1 Light in wavelengths of 350 nm to 520 nm (upper UV to mid-visible light) is known to cause skunky beer. Green bottles allow green light (520 nm to 550 nm) to pass through, whereas brown bottles (ranging ...


3

Some people say that it's better to include the IC in your boil (if it's copper) as the copper gives off micronutrients (namely zinc) as well as providing a nucleation point which reduces the chance of boilovers. See Pennies in the Boil


3

It's certainly possible - a starter is only fermented to completion, but not conditioned, so byproducts of fermentation, such as acetaldehyde (green apple) and acetolactate (which becomes diacetyl - butter/butterscotch) are still left in the beer. This have low taste thresholds (50ppb for diacetyl), so it doesn't take much for you to notice then. In a ...


3

The yeast odour can really only come from yeast. After 10-14 days in primary, be sure to leave the carboy to cold condition until the yeast have settled out and the wort looks fairly clear. The apple/cidery flavour does sound like acetaldehyde, which can come from to short conditioning period, oxidation, or contamination by acetic acid bacteria. The cider-...


3

I have this exact same problem and it started showing up when I went to all grain. Some of the BSG kits I've done use a steeping grain process where the grains are pre-milled and they all turned out great. My extract brews have also been great. In every case I've used the same water source (tap water)... From the first all-grain batch to my latest they have ...


3

No problem....I go longer than that in buckets regularly. However, dry hopping is one of the few times I still use a secondary. There are interactions between hops and yeast that can increase flowery esters. After experiencing that, I found that I get better dry hop character by getting the beer off the yeast before dry hopping.


3

Generally green apple (acetaldehyde) is due to fermentation not being complete. Did you cold crash? Did you verify that your beer was done fermenting? It is strange that your fermenter builds up so much pressure, even with an airlock attached. Are you filling the airlock to the top or to the line? Too much CO2 will cause the yeast to slow down, which ...


3

Doubtful It is remotely possible for yeast packs to have microbes on the outside of packaging from contamination at packing time. I don't see it contaminating unopened beers though. Most likely the beer has just aged and changed in flavor as all beers do.


3

Well its purely speculation but if the off flavor is the same across three batches, and you're sure your sanitizing process is spot on, I'd say its likely to be either your fermentation temperature, your water or a little of both. If the beers are a little fruitier than you'd expect that could be fermentation temperature. If you ambient temp is 72F you ...


3

I usually dissolve my sugar in boiling water, before adding it to the bottle or kegs for priming. I have in the past just added half a spoonful of granulated sugar directly to the bottles with no ill effects. If you are worried this may be a source of your off flavours then make a sugar syrup, and boil it for 15 min, then allow to cool with a lid on, and ...


3

The most "important" time for fermentation is probably while it is happening. The yeast produces and consumes things over the course of the fermenting so IMHO their is no particular "important" point per se. The first few days are often considered "important" because (given the right conditions) a lot of of the fermentation can take place then. Some brewers ...


3

That grease in extraction fan is from volatile food grease / oils. In my experience these are not water soluable. The condensation that fell back in was most likely just water.


3

Turbo yeast is very aggressive and consumes almost all sugars. Bitter is most likley from an unbalance in sweet / bitter. Add a non fermentable sugar like lactos to sweeten and counter the bitter to taste.


3

How old is it? I know from experience just a few days at warm temps like you described 80°F will make a delicate beer taste like it was age weeks. Noticing the green bottles, light struck (skunking) can happen in a matter of minutes. Even bottling in direct light using clear lines can do it in the short time it passes through the line.


3

I chased a similar off flavor for years before I finally concluded it was coming from the US-05 yeast I was using. I'm not sure everyone can taste it, but it was very offensive to me. Dusty was the exact word I used to describe it. It was strongest in the finish of the first sip, and it grew weaker as I continued to drink. It wasn't every batch I brewed with ...


3

Band aid flavours are related to phenols, which can only have a few possible causes. Chlorine compounds in the wort (either residue from cleaning or as a result of using chlorinated tap water) may produce TCP (tri-chlorophenol) during fermentation. Excessive levels of tanning may have been extracted from the grain husks (tannin is a phenol) due to ...


3

Clove-ey flavor in my experience is due to Yeast health (namely- hot fermentations) Chloramines in water Bacteria infection My prime bet is fermentation temps- you say you ferment at 66-68F - is this ambient temp- or temp controlled? Are you pitching your yeast when your wort is hot? I would discount an infection (#3) if the clove doesn't develop to ...


2

Unpleasant fresh soil as you describe it can be a sign for ethyl fenchol which is a water contamination issue. I don't think Willamette or any hop for the matter should lead to a result how you describe it but that's hard to say without smelling/tasting.


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