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Messages - a10t2

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General Homebrew Discussion / Re: high gravity wort diluted IBUs
« on: March 28, 2015, 09:47:49 AM »
The color will also be half the SRM of the original.

That wouldn't be the case in any color model I'm familiar with. Though in a beer this light you wouldn't notice the difference.

Events / Re: Trouble with brews up tickets...
« on: March 28, 2015, 09:07:25 AM »
There are some AHA brass active on the forum, but I don't think it's actively monitored for customer service issues. I'd email Matt, the Events Coordinator, first:

General Homebrew Discussion / Re: Batch Size with New Recipes
« on: March 28, 2015, 09:04:25 AM »
I always do 6 gal batches to start, because I figure that if I'm going to tie up a keg, it might as well be full. Even if the beer's sub-par, I don't seem to have any trouble giving it away.

If I was bottling, I could see doing 3 gal batches to at least net a full case. It should take at least as long to drink the beer as it took to brew it, IMHO.

Kegging and Bottling / Re: Pinic tap hose length?
« on: March 28, 2015, 08:57:08 AM »
Slightly tangential , does any one make a picnic tap that actually works? The ones that came with my air keg set will not seal even at four psi.

My first thought would be that 4 psi isn't enough pressure to seal it. I've never had an issue at 10-15 psi serving pressure.

General Homebrew Discussion / Re: do I need to use campden tablets?
« on: March 27, 2015, 10:54:56 AM »
Martin, roughly how much sulfate from one tablet would need to be accounted for in Bru'nwater (or other) ?

The packaging says one tablet/gal is "150 ppm", but not of what. So at one tablet per 20 gal, ~8 ppm of something or other. Probably SO2 since that's what a vintner would actually be worried about.

My tablets mass ~650 mg. If you assume that's entirely K2S2O5 - I'm sure there's also some sort of binder, but we'll establish an upper bound - that's 5.6 ppm of metabisufite, or 3.7 ppm of sulfate assuming my stoichiometry checks out.

General Homebrew Discussion / Re: Evaporation Rate
« on: March 26, 2015, 08:58:24 AM »
The 100 bbl system at Sierra Nevada Chico looked like the volcano. The boil off rate is down around 5% as they have a small stack for the vapors to escape.

I would assume they have an internal calandria, which is why it looks so vigorous relative to the boiloff rate.

I wish we could get rid of the concept of percentage boil-off.

Agreed, but when there are four orders of magnitude difference in volume between the largest and smallest brew systems, it's just something you have to put up with.

Kegging and Bottling / Re: Pinic tap hose length?
« on: March 24, 2015, 07:00:59 PM »
Yeah, you can carbonate at the normal pressure, then reduce it for a short period (a couple hours) to serve at lower pressure.

General Homebrew Discussion / Re: Evaporation Rate
« on: March 24, 2015, 06:32:48 PM »
10%/hour, with a 75 min minimum boil, is what I shoot for. Granted, this is at 10 psi, so all kinds of things are wacky. At lower elevation I'd imagine you could boil off less given the higher temperature.

Equipment and Software / Re: Question about grain bags
« on: March 24, 2015, 06:19:22 PM »
As long as your cooler has a drain I'd do a braid instead. Easier to clean...

Kegging and Bottling / Re: Pinic tap hose length?
« on: March 24, 2015, 04:59:10 PM »
Even 4' is pretty short assuming it's 3/16" ID tubing. I'm surprised you're getting a good pour. If you have to go shorter, you'll probably want to reduce the line diameter to prevent foaming. You can also put a little restriction in the line or dip tube:

All Grain Brewing / Re: #5 Gravity Questions
« on: March 24, 2015, 09:32:00 AM »
9.62 lbs. of grain. Mash thickness of 1.665, mash volume was 4 gallons, sparge volume was 3.37 gallons.

In case you need it, 2.75 gallons first runnings, 3.5 gallons from sparge.

You're losing ~5% (0.15 gal) to either dead space or incomplete lautering of the first runoff. Figuring out a way to get all that wort out would be a good start if improving efficiency is the goal.

Taking a step back, though, your measured gravities are *really* close to what you expected. So regardless of what your mash efficiency actually is (somewhere around 80%), it's very nearly what the recipe was formulated for.

The Pub / Re: What's the Weather Like Where You Are?
« on: March 20, 2015, 08:10:14 PM »
Man, it is so warm here
I am already into the Maibock.

It's definitely caught me by surprise. I just kegged the doppelbock; the maibock hasn't even been brewed yet.

General Homebrew Discussion / Re: Second opinion on hydrometer reading
« on: March 20, 2015, 05:20:48 PM »
All things considered, the abv calcs are estimates. What's your experience with the etimatates vs. actual Sean?

In the batches I've actually had tested, which is 200 or so, but all in the same brewery, the estimate 0.525(OG-FG) was always within ±1% and almost always within the ±0.3% the TTB requires for labeling.

General Homebrew Discussion / Re: Second opinion on hydrometer reading
« on: March 19, 2015, 06:41:45 PM »
What am I missing? Is the FG vs OG not an exact measurement of ABV?

Not even close. It's an accurate measurement of how much dissolved extract changed during fermentation. Anything beyond that requires making assumptions about the composition of those sugars, and how much ethanol was produced as opposed to CO2, yeast biomass, etc.

General Homebrew Discussion / Re: try at batch sparging
« on: March 19, 2015, 06:39:19 PM »
As usual, I will pimp this link:

The single best thing about batch sparging is that it's entirely predictable.

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