Pikey, the only thing in my last post directed specifically to you was a statement of appreciation. Can you please stop with the personal jabs?
What that says is perhaps more relevanced by what it Doesn't say about "no added complex sugars"
Why would they add complex sugars? They would offer no cost savings or utility in the product. Do you have any reason to suspect it was made with anything other than the advertised 100% marris otter malt?
However, your producer says that the malt is mashed and then the mash is reduced to a state where it only contains 20% water.
I think you are confused again. The quoted 20% water was for cooper's, with a link to their website.
Your friends recipe stated that he wanted 6kg of malt extract in there (13.2 lb). Your calculation above shows the same Gravity to be produced by 9.6 lb malt
Edit: , so you are using more malt extract than actual granular malt, if your argument is to have any validity. So where has the weight of the skin and the flour etc gone ?
I would really appreciate it if you could phrase things in terms of trying to understand rather than in terms of questioning my validity. I am explaining things that I have actually done and are widely documented and practiced, they are inherrently valid. You come across as very argumentative, on a subject you admitedly have no experience in. I'm not sure why are even arguing about all grain mashing in a thread about extract, but I will be glad to try to explain it to you.
The simple explanation is that when mashing malt it is entirely possible (typical even) to optimize the mash for whisky compared to malt extract which was mashed for beer. Temperature (or temperatures in a multi rest schedule) of the mash is the main variable, but grain:water ratio and time also contribute. Washes made from malt are also enzymatically active throughout fermentation meaning virtually all the starch is converted. If adding in on grain fermentation, literally all the starch in is converted, and there is surprisingly little "skin" and no "flour".
It is fairly typical for malt extract fermentations to finish in 1.015 range, while all grain mashes can finish below 1.000, which would be a difference of 2% ABV, or 25% of the total alcohol in an 8% wash. The numbers I posted were calculated for an easier to achieve 1.005.
TL/DR, you can make all grain wash 25% more fermentable than an extract wash.
My version is called malt extract and calls for sugar to be added to make 40 pints imperial from 1.5 kg malt extract.
You keep saying things like that but take a look at cooper's own recipes, many of which use all extract and no sugar.
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Kiwibruce, sorry to put you on the spot, but can I ask you a couple specific questions to maybe, hopefully put this to rest? I know you have done both AG and extract washes.
1. Do you think all malt and all extract washes of the same abv are relatively similar?
2. Have you done any sugar and extract washes? Why/not?