Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - mabrungard

Pages: [1] 2 3 ... 151
All Grain Brewing / Re: Water Chemistry Calculators
« on: February 20, 2018, 01:46:07 PM »
Maybe Martin finds mashes gravitate toward 5.4 because he has (as we would expect, effectively) set the conditions for that;  were he to erroneously set up the conditions for 5.0 or 6.0, that would be the center of gravity. 

Well, I'm not sure that this is true. I do try and target pH's several tenths above and below that 5.4 median (dependent upon style brewed), and that tendency for the pH to trend toward 5.4 is ever present. Now, I haven't tried targeting the large deviations mentioned above, but its an interesting experiment. Now if I only had the time to experiment.

General Homebrew Discussion / Re: Too much SO4?
« on: February 20, 2018, 01:39:13 PM »
It's important to recognize that many things affect dryness and balance in beer.

We know we have malt and it has sweetness. That sweetness has to be balanced by other factors (bittering, roast flavor, acidity, astringency, sulfate, etc) in order to be a more pleasing beverage. Jim points out another factor that I had not previously considered: the sweetness and fermentability of malt components. They sit on the other side of the balance equation, but they certainly affect the balance.

One thing that surprised me a few years ago was finding out that Burton Ale was a big malty (not highly bittered) beer that was brewed in Burton on Trent. I didn't expect that this type of beer would be effectively brewed with the high sulfate water of that city. But the water's high sulfate content was offset by the high malt content. The dryness from the sulfate helped balance that malty style.

The 200 ppm sulfate content that Jim mentioned for his beer, seems to be a good starting point for many brewers interested in exploring the effects of sulfate in their brewing. I believe that it may have been the combination of the elevated sulfate and the increased wort fermentability provided by his low mash temp that helped produce the imbalance that he didn't like.

I still prefer 300 ppm in my PAs and IPAs, but its an acquired taste. I'm typically mashing those styles in the 152F to 154F range, so they do still have a bit of residual sweetness. Maybe that's why they're enjoyable to me? 

All Grain Brewing / Re: Potential of Hydrogen (Another pH thread)
« on: February 20, 2018, 01:21:12 PM »
The term: STP is widespread in chemistry. Standard temperature and pressure are important aspects since so many parameters can vary with those components. Its a stretch to assume that pH measurements were not conducted generally with respect to STP unless their deviation is specifically called out. Now, if there were only a true 'standard' to the STP. Unfortunately, even that isn't fixed. But generally, somewhere around room-temp and sea level atmospheric pressure is typically used.

The pH offset between mashing temp and STP cannot be a fixed number unless a mashing temperature is applied. I'm assuming that most can recognize that the offset is zero at room temperature and it grows with increasing temperature. So the 0.18 to 0.35 offset range may have validity...but at differing temps. 

I see that Steve's article is a special feature available only online...excepting that the link is broken. I'll send a note to the powers.

All Grain Brewing / Re: Water Chemistry Calculators
« on: February 19, 2018, 07:31:29 PM »
One point to note here: You have to be in the ballpark using estimation first. A very low or very high pH won’t just magically gravitate to 5.4.

Very true!! That phenomena only seems to work when I've done treatment measures that were targeted to fall in the 5.2 to 5.6 range. Now if I could only figure out why that phenomena occurs???

Equipment and Software / Re: Brewers Edge Mash and Boil
« on: February 19, 2018, 05:45:32 PM »
I'm never going back to gas. The only thing to be sure that you do with electric systems is to make sure the element(s) is clean after each use. Organic deposits do collect on the element and will burn in the course of many batches. I find that those deposits come right off with a scrubby pad if you attend to them after each batch.

All Grain Brewing / Re: Potential of Hydrogen (Another pH thread)
« on: February 19, 2018, 04:42:09 PM »
Sadly the article cited above, set the state of brewing water chemistry back a step. While there are plenty of pH optima that we are forced to compromise on while brewing, the fact of the matter is that tens of thousands of brewers have found that targeting the 5.2 to 5.6 range (room-temperature measurement), produces a better tasting beer than if assuming that range is at mashing temp. There is a spirited discussion of that article and this issue on Bru'n Water's Facebook page.

Do yourself a favor and forget about measuring pH at mashing temperature. It's damaging to your pH probe and it doesn't lead to a better beer. While there are pH probes that are fabricated for high-temperature use, they generally stay at that high temperature throughout their life as part of a process measurement. That's not what happens in brewing where you're taking a room temp probe and plunging it briefly into high temp wort and then back to room temp. That thermal stress does hasten the breakdown of that probe's thin glass membrane.   

All Grain Brewing / Re: Switching to all grain: krausen and head issues
« on: February 15, 2018, 08:38:50 PM »
Miami water isn't too bad. Although its reputed to be from the Biscayne Aquifer, but that aquifer is so permeable that its pretty much water directly out of the SFWMD drainage canals. It's lime softened in most cases. But it would require a bit of acid when brewing paler beers. Of course, you also need to neutralize the chlorine in the tap water. But there should be no need to use 'spring water' since that is what your tap water is.

How long are you boiling and how hard? Boiling too long and hard does damage wort and one of the things that gets damaged is heading ability. A gentle boil with just enough vigor to cause the wort to circulate is good enough for the first 30 minutes. Keep the wort fully covered during that initial period. For the final 30 minutes, remove the lid and make the boil slightly more active. That will remove all the DMS, if you used Pils malt in your grist.

Yeast and Fermentation / Re: Dry yeast cell count..
« on: February 15, 2018, 01:23:54 PM »
I don't concentrate on the cell count, but I do know that the practical limit for ales is roughly 1 packet per 20L for 1.065 wort. You can use that for lager too, but then you run the risk of developing more fermentation by-products. Most pitch roughly 1.5 to 2 times that amount for lagers.

I'm sure that someone else will evaluate your math.

All Grain Brewing / Re: How is Munich malt made?
« on: February 15, 2018, 01:18:54 PM »
Using RO for Dunkel and Dry Stout is OK. In the case of Dunkel, the roast addition is so small that it doesn't drive pH down excessively. In the case of Dry Stout, the pH depression is desirable, but you don't want the mashing pH to be low for most of the mashing duration. That will cause excessive proteolysis and that can destroy head and body. Adding the roast at the end of the mash is a good technique for keeping the mash pH at normal level for most of the duration and then crashing it at the end.

General Homebrew Discussion / Re: Closed transfer
« on: February 15, 2018, 01:11:07 PM »
Iodophor: Embrace the stain

You had stated previously that you thought the open fermentation was a contributor (i.e. shallow geometry, exposure to oxygen, etc.). Most of the scientific literature states otherwise, i.e. increase in oxygen leads to ester reduction.


I'm sure you've seen photos of the open fermenters in some German Hefe breweries. I've got to believe that the weizen yeast has some sort of affinity to some slight oxygenation. Even under a big krausen, I've got to assume that some oxygen gets into the wort. While I'm not sure how effective the loose foil cover is for Rob, with respect to enabling oxygen ingress to the fermenter, I suppose there is some.

Isn't it possible that those scientific literature are presenting results that are non-weizen related and there could be some truth in the benefit of micro-oxygenation in this case?

The Pub / Re: It's almost spring!
« on: February 14, 2018, 02:48:36 PM »
I don't get an east coast team training in AZ. It was much better when CLE was in Winter Haven.

Rebrew: absolutely. I doubt you (anyone not you personally) can medal with a hefe from the first round. For a hefe I usually brew it 2 weeks before the last day of drop off. That usually puts the beer on the judges table in pretty good condition. I rebrewed all 4 that advanced last year.

Agreed! I found that out the hard way over a decade ago, but it bears repeating to all competitive brewers and beer afficionados. Unless your entering a style that requires significant lagering or maturation time, a fresh beer is more likely to do better in the drinker's glass.

The Pub / Re: Margaritas and Whiskey Old Fashioneds...
« on: February 14, 2018, 01:42:07 PM »
Rye is a valuable enhancement for a Manhattan. This is a recipe that my wife pulled off the web, excepting that I used Towne Branch Rye instead of bourbon.

1 cup bourbon
2/3 cup sweet vermouth
4 dashes Angostura (I found that it needs an extra dash or two)
4 Orange peel twists
4 Candied cherries

Obviously, this is not for one person!

Pages: [1] 2 3 ... 151