Hi. My new batch, Australian Pale Ale had a really high O.G of 1.048. After two days its dropped to 1.034, but the top of the foam really looks like a flat blanket of grey mould. I'd only opened the lid for 10 seconds. Is this what Krausen can look like? So is the O.G too high? All help appreciated
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Does it smell really bad like vinegar?
Unlikely to get mould after 2 days unless you didnt clean it properly.
Also, this is batch 4. Not one of them has bubbled through the airlock at all. Am I doing something wrong and should I be worried? Brew seems to be airtight.
Andrew
In fact did you know that for most types of kit (particularly ale kits), you do not need the primary fermentation vessel air tight anyway? I keep the vessel covered to keep flies, debris out etc, but I only put the lid on loosely so the gas can freely escape. Only in secodary fermentation is it important to keep the airtight.
As for your OG readings, those hydrometers you get are only accurate to a point, so again, don't be too worried if your reading doesn't exactly match what the instructions say. It is more important to make sure you get a stable reading over a space of 24-48 hours, which would indicate the breweing has finished.
I don't even bother using my hydrometer anymore, provided you keep your brew at a good and stable temperature, ideally between 22-24c, there is no reason once fermentation has started for it not finish, provided you give it enough time.
Do you use a heating device of some sort, or anyway of keeping the temperature stable?
For most kits I leave them 2 weeks, some of the more premium kits 3, that will ensure they are thoroughly brewed and all the sugar has gone. Then a further 3 weeks in secondary (minimum) although I am nearly 3 months ahead at the moment so my beer gets a good time in secodary which does improve the qaulity of the beer, some kits more than others. If you have the the storage, keep brewing, the longer it sits around, the better!
The 3 most important things in my opinion to brewing are:
- Being very vigilant with cleaning and sterlising
- Temperature control, stable between 22-24c at all times
- Patience
Provided you get those things right, you can't really go that far wrong after that
A gentle stir is all that's needed, there's no need to whisk it up!
Anyways, I opened up and drank from my first batch of coopers lager from about 3 weeks in the bottles (f.g 1.016) as well. While the alcohol content was down, and the flavour not strong, it did have a great head and colour on it. All in all happy for my first ever beer batch!