MKG wrote:Had a look at that site you mentioned, Cheezy - looks a good one. BUT I need to correct a couple of general misconceptions (about any fermentation, so I can safely say it applies to cider) that have appeared above. A malo-lactic secondary fermentation MAY, not WILL, occur - and it's more likely not to unless you force it by special treatment. Should it happen, its effect is to soften and round off the flavour - slightly - and add a "spritz" to your wine/cider/perry. If the initial flavour is really rough, it won't be of great help.
Muscroj, I think you may have hit the nail on the head - that extended period in the bucket after fermentation had finished (a few weeks!!!) almost certainly led to heavy oxidisation of your cider. That may well be the cause of the awful taste. Because it isn't just a matter of dissolved oxygen (it's the start of a long and complex chain of chemical reactions), it's irreversible. And if there was a lot of tannin in the apple juice, it gets even worse as far as taste goes (try drinking tea after you've left it for a few hours). Oxidisation flattens overall taste but does very little for either tannin or acid - so they're the tastes you're left with.
I think you need a few taste tests. Try just sugar first. A level teaspoon in a bottle, say. Taste it - has it improved? Would more sugar improve it further? If you can improve the taste by using sugar (without making it sickeningly sweet) then you have a chance of rescuing something.
one, as the experts call it). If I were you, I'd keep adding yeast.
Howdy,
Had a few days off laying paving, much respect to professional pavers, by god it's hard work.
Finally got Andrew Lea's book "Craft Cider Making", pub The Good Life Press. It's excellent, however not too much in it that is not on the website I mentioned., but nice to have as a handy book. Good section on working out your alcohol content , which is not on the web, plus some good advice about planting the right apple trees etc.
OK MKG, on malo-lactic conversion your right it's not a certainty, however if you produce cider "traditionally " ie in a barn/garage like me the cold winter followed by Spring temperature increases does help the process, you need around 17'C to kick start it. However if the problem is acidity, (as I think it is), you are unlikely to get MLF (malo-lactic fermentation), which is a shame, as it will if full conversion happened halve the acidity. It is possible to buy a MLF culture which will work down to a pH of 3.1. However all you are doing is trying to correct the basic problem, acidic apples in, acid cider out!. Bramley apples have the lowest sugar content , highest malic acid content (pH 3, recommended lowest juice pH is 3.2) and lowest tannin content. So since the problem from Muscroj comes from juice made with 50% cookers, I suspect tannin is not the problem. It's the acidity. This as MKG rightly says can be masked by sweetness. I would not try to use calcium or potassium carbonates as they will effect the taste. Try adding sugar, or if you can stomach it sugar substitutes.
As to storage, I'm amazed fermentation only took 6 days. I'm guessing you fermented inside your house. Traditionally farm house cider is made in sheds, in November. Fermentation is therefore slow, no bad thing as fast fermentation can lead to the yeast producing methanol rather than ethanol (bad head's ensue). I make mine in the garage and it takes around 4 weeks (I use 25L vessel with airlock). As per A. Lea's site I measure the SG of the cider every week, to ensure it does not get "stuck" (time to add nutrients to help the yeast). The drop in SG (ie sugar to alcohol conversion) is amazingly linear, and you can predict when you need to rack off the cider ( recommended at SG 1005), so you can plan your weekend around it.
Once you've racked it I then leave the cider in an airlock fitted vessel, until the weather warms up, usually around March, this helps clarity. I then use camden tabs then bottle with a teaspoon of sugar per bottle. At this stage it is important not to remove the airlock until your ready to bottle/drink, as the remaining yeast will in all likely hood take the SG to 995 or so, and you need to leave a blanket of carbon dioxide over the cider
On tannin, it's the forgotten third element to proper cider, the wonderful edge on the teeth. If you are using dessert and cookers only, it will be low on tannin.
I would recommend using a crab apple/wild apple along with dessert and cookers. (I would try to reduce your cookers down to 20% max). If you get a good balance from the start, you will not get finished cider problems.
Yes you can reduce tannin by using egg white (or fresh blood as they used to use!), it'll help clarity, however again I do not think the problem here is tannin.
From A . Lea's book, advice is not to use isinglass , as it's not suitable for high acid cider. Use proper brewing gelatine, but you may "over fine" and cause a gelatine haze, so he recommends using bentonite to compensate.