mln810 said:
Does Normal granulated sugar leave an apple-y taste? I've read somewhere to use dextrose, Is that right???
Dextrose is glucose . . .White table sugar is sucrose which is Glucose and Fructose. When sucrose is transported across the cell wall the yeast converts it to glucose and fructose . . .. and then the glucose converts to fructose for use in teh metabolic pathways to produce energy. . . . What this means is You can use any form of sugar you like as eventually it all ends up as fructose for energy (Unless it goes down a different pathway for som other organic compound) the unrefined sugars are fine as well but you need to be careful as they can leave behind a 'taste' which may or may not be beneficial in beer.
as for granulated sugar leaving an apply taste . . . Take a spoonful of sugar and allow it to dissolve in the mouth . . .. taste anything like apples ?? No, I don't think so either.
The problem with a lot of American / US influenced websites/authors is that they have often come from an extract brewing background where it's referred to as Kit and Kilo . . .a 1.8Kg tin of extract and a Kilo of sugar . . . and with cheap extracts (and kits!!) the contents of the kit may be 50% sugar rather than 100% malt extract (it won't be labelled as such . . . Glucose syrup / Corn sugar / Maltose Syrup / Barley syrup . . . basically sugar not derived from malt) . . . so if you consider that the 'beeryness' of the kit comes from the malt extract (from brewing grade malted barley), and you have an extract that is 50% sugar, and you add a kilo of sugar to that . .. . the beeryness dilutes dramatically . . . and along with the nutrients the yeast needs for healthy fermentation. so you end up with off flavours from the yeast, plus not very much beer flavour from the malt . . . any wonder that people have complained about an apple/cider flavour to beer made with granulated sugar . . . Unfortunately for us the US centric approach then sees
any sugar as evil and adding an apply taste to home brewed beer
. This is why there is pretty much always the advice to replace any sugar you add to a 1 can kit with malt extract . . . it does improve the kit, but in some cases (I'm thinking Coopers Lagers here) it can throw the balance and colour of the beer off. I know that some people recommend going to your local health food shop and getting malt extract from there, I would urge caution on this as there is no way of knowing if that is brewing grade malt extract. It's cheap, but there is no guarantee that it is Barley malt, uncertain fermentability (leading to high finishing gravities) and uncertain flavours. . . stick with good quality malt extracts available from your LHBS.
I did refer elsewhere to the 10% rule where I said that for any British style beer, the addition of 10% plain sugar will make the beer crisper without affecting the flavour as much. . . .The proviso is that the beer is made from 100% malt or a 2 can kit which is alo 100% malt extract.
Using 1/2 to 1 tsp of granulated sugar to a pint of beer for carbonation will not affect the taste at all