Napa Cab
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Wow, I've been hitting 7.5 to 8% using a bucket press. Guess my fat arse paid off! (Possible conversation with my wife: "Honey, I can't lose weight, my extraction rate per pound of grapes will suffer. You wouldn't want me to make less wine, would you?")
I think the % throws the concept off. 6 gals of liquid are around 45 lbs (real rough guess) so aren't you really getting more like 45% yield from 100lbs of grapes?
Mike
Mike
You've got a point there, just jumped in and accepted the math without question (you can tell I was a comp sci major, math minor).
He's just mixing units, pounds and gallons, 100 pounds gives 6-7 gallons of wine, pretty much on track from what I see.
Three lugs of grapes (108#) yields roughly 10 gallons of must, I typically get 6-7 gallons of wine from 10 gallons of must, I call that 60-70% yield.
I can buy either number.
I usually have been getting a little more from my local grapes than the Chilean or California batches. Around these parts the last few Fall seasons we've had late rains which I think boost up the liquid yield but lower the brix. Thank this site for helping me adjust and get a decent batch of wine no matter what hickups I have in the raw material supply (so far).
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For me I go with the following. These numbers ensure that the resulting wine does not exceed my capacity.
2 x 36lb lugs will fill a 5 gallon carboy with pressed and free run wine.
5 x 36lb lugs will fill a 54 liter demijohn with pressed and free run wine.
For VCSS tanks, I figure 9 lugs to every 100 liters of tank space. So, 18 will fill a 200 liter tank, 27 will fill a 300 liter tank, and 45 will fill a 500 liter tank.
Some years (like 2016) my numbers came very close. There have been some years, though, where the resulting wine was a bit less.
2 x 36lb lugs will fill a 5 gallon carboy with pressed and free run wine.
5 x 36lb lugs will fill a 54 liter demijohn with pressed and free run wine.
For VCSS tanks, I figure 9 lugs to every 100 liters of tank space. So, 18 will fill a 200 liter tank, 27 will fill a 300 liter tank, and 45 will fill a 500 liter tank.
Some years (like 2016) my numbers came very close. There have been some years, though, where the resulting wine was a bit less.
Boatboy24
No longer a newbie, but still clueless.
3 lugs (108lbs) gets me 6.5-7.5 gallons (sometimes a bit more if I'm lucky). That's enough for testing and tasting along the way, as well as making sure the angels don't get too thirsty. At bottling time, I'll have enough for 30 bottles, and maybe a few more.
sdelli
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I realize it sounds a little crazy to the math buffs... But if year after year it works then I like to keep things simple and run with it..... I can usually count on 10% yield of must after the crush as well... 100lbs of grapes will give me about 10 gallons of must... Ya.. I know mixing again lbs to gallons again... But it works!
That's a much better yield (10 lbs per gallon) than I get. I am usually right at15.5 lbs per gallon.
sdelli
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Not finished wine.... Must. .... I use this to calculate how much yeast.. How many fermenters.. How much nutrient to produce the fermentation.. 15 1/2 lbs to a gallon of finished is about right.... About 7% yield.
Just to further confirm- I crushed about 280 lbs the other day. And ended up with about 28 gal of must. Pretty spot on.
Good luck with those Napa grape$ !
how are you acquiring these grapes? hopefully you will be able to share how much the grapes cost as well.
Regards
sdelli
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There is a group of us that purchase through a winery. The cost is more then you want to know.... Probably if you took the ugliest number per pound it would still have to be doubled to be close to right. But for me that is the type of wine I enjoy making and drinking. And really that is really what this hobby is all about. If you do not enjoy drinking it then never make it! No matter how good or bad the price is. Every few years I get a bug to make wine from Chilean grapes. I hate it! So why make it...... The people that drink my wine get so disappointed when I bring them a bottle of Chilean wine. Spoiled......
I guess so, Napa --> Chile doesn't really equate well. Are the grapes shipped outside California? I'm curious because in Toronto, I never see Napa grapes anywhere (although some people try to tell me that they have Napa grapes for $50 / lug --har har)
phasee
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There's a place in Ottawa - Musca - that imports Californian grapes, just had their delivery last week.
Sent them a quick email. Just curious. I also see they have Italian juice with skins, so I'm curious to see how that is processed and the quality.
