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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. ...


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

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

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

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 ...


2

First thing, its not generally recommended or needed to make starters when using the dried yeast that you listed. That being said its not likely to super hurt you either. Its likely a combination of issues. To be absolutely sure of your sanitation process be sure you are also sanitizing all your starter equipment too. Treat it just like you do the brewing ...


2

In a word, no. What you are experiencing has another cause.


1

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 ...


1

If you're using malt extract, this could be "extract twang." Not all extract gives this off flavor, but some does. I suspect it mostly depends on the quality and age of the extract. It seems to be more of a problem with liquid extract than dry. I would describe the off flavor as a slight sourness in the finish, accompanied by a sort of astringent dryness. ...


1

IMO you should always decant your starters Starters are for yeast growth and health. Unfortunately this environment of a starter usually makes terrible beer, because the yeast is allowed to have an ideal metabolism for reproduction as a result they create a lot of unwanted esters. The main differences between your batch beer and the starter beer (the part ...


1

My experience with mead is that you should wait. What I do personnally is I bottle (I use twist-cap bottles which are not really air-tight), wait a few months and then siphon again to clean bottles, leaving just a bit more dead yeast at the bottom. My mead usually becomes really clear after about 8 months, and stops tasting yeasty at the same time. It's ...


1

Earthy flavours can be caused by mold spores in the area you store your beer. They tend to occur in damp areas where the mold grow within the walls of the area and then passes a chemical through any porous surface into the beer (even some glass) Next batch you make sanitise the equipment and then sanitise the walls, floors and stands etc where you will be ...


1

Try a Berkey filter (or maybe a Pur, running it through more than once) http://www.trmplumbing.com/blog/chloramine/chloramine-filter-test-1



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