update for everyone, I'll add the pictures from my phone after.
My latest batch started at 1.045 from filtered apple juice.
I pitched a packet of S-04 onto 19 litres of filtered juice.
15l Allen's low acid canada choice from concentrate w/ vit c
4l Rougemont mellow low acid canada choice from concentrate w/ vit C
pitch date was 09/03/2015
by 10/26/2015 SG was down to about 1.006 based on my adjusted refractometer readings. more importantly it was stable over about a month.
I added 2kg of mixed berries, blackberries, raspberries and blueberries, purchased frozen (no name brand) and allowed to thaw before adding directly to the bucket. I need to remember to leave more headspace, as this was pretty well right up to the lid of my 5 gallon bucket, and I had to remove some liquid as the renewed fermentation and berries was forcing cider out the blowoff tube. About 350 ml was all I needed to draw off.
fast forward to 11/09/2015. Siphoned to my bottling bucket from under the fruit, onto a thawed can of AJC. The can of AJC should have contained 108G of sugars based on the nutritional information.
apples are roughly 50% fructose, 25% sucrose, and 25% glucose.
1g sucrose is equivalent to 1.15g of dextrose for priming, and fructose seems to be equivalent to about 1.3 times the dextrose. so I'm ballparking it at about 2.68 vols of CO2
here's my math.
1 Sucrose = 1.15 dextrose
1 Sucrose = .5 Fructose + .5 Glucose
1 Dextrose = 1 Glucose
so 1 Fructose = 1.3 Glucose/Dextrose.
so the breakdown of the sugars in the AJC in Dextrose equivalents is
54g fructose = 70g dextrose
27g sucrose = 31g dextrose
27g glucose = 27g dextrose
total priming sugar value 129g of dextrose equivalent. This all hinges on dextrose being equivalent to glucose a a priming sugar per gram. I'm basing this on the fact that Dextrose is also known as D-glucose.
please, food scientists step in.
Here's a shot of the hydro sample which had an FG of 1.003
View attachment ImageUploadedByHome Brew1447091200.914108.jpg
Here's a shot of what was left of the berries. I may want to mush them next time to get better juice extraction.
View attachment ImageUploadedByHome Brew1447091226.851752.jpg
I'm assuming a 2.5 ppg boost from the berry blend. raspberries being 2ppg an blueberries being 3, and blackberries, I don't know.
so final abv on this is about 5.8%