Revision 16 as of 2010-11-13 06:43:23

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Making Beer

Useful Information

General Brewing

Software

QBrew Gripes

Let's bitch about the missing features so that ClintonEbadi might suffer some C++ and add them to QBrew...

Location Specific

Water

Cary uses chloramines rather than chlorine for water purification. The homebrew shop was helpful and warned that this does not evolve out as gas during boiling like chlorine does, and results in band-aid like flavors in the final beer. To counteract this a quarter of a campden tablet must be added for each five gallons of water used. This will react with the chloramines and cause them to evolve out as sulfur and chlorine gases within approximately fifteen minutes. The water may then be boiled as usual.

For extract brewing water adjustment is not essential, but water in the Raleigh region is soft enough that there will be issues with hop bitterness not being properly attenuated. The LHBS provided Water Crystals (8:1 CaSO4:MgSO4) with a recommended rate of one or two tsp per five gallons. A teaspoon has a mass of 4g (3.55...g:0.44...g).

Important Water Ion Levels for Cary NC Water (mg/L)1

Ca+2

Mg+2

SO4-2

Na+

Cl-

HCO3-

9.60

2.90

38

32.1

21.3

50.4 2

With 2g of Water Crystals

25

4

78

32

21

50

With 4g of Water Crystals

41

5

119

32

21

50

With 8g of Water Crystals

72

6

201

32

21

50

Sulfate:Chloride ratio of raw water = (approximately) 1.2:1.0 which is not particularly good for anything. This should be closer to 2:1 for bitter ales, 1:3 for stouts and porters, and 1:2 for milder ales (e.g. Justin's Brown Ale). Some minor adjustment with NaCl will be needed; since extract is being used and the NaCl content is unknown a conservative approach is best. ClintonEbadi suspects aiming for a ratio of 2:1 for bitter beers, 1:2 for more malt dominated beers, and leaving it alone for the others is the best approach for now.

According to BeerSmith our Magnesium levels are insufficient for yeast nutrition, and the sulfate levels are too low for bitter beers (like ClintonEbadi's Pale Ale recipe).

Based upon this information it appears that a good approach will be to add 2g of Water Crystals to all batches with an appropriate amount of NaCl to balance the additional Sulfate.

Another thing to be wary of is steeping roasted grains in soft water:

Future Ideas

Available Equipment

So far all owned by ClintonEbadi and available for shared use.

Wort Production

Fermentation

Siphoning &c

Bottling

Science!

Books

Things That Don't Actually Work

NEEDED

  1. Additions calculated using http://www.brewersfriend.com/water-chemistry/ which rounds to the nearest number... not so scientific, but good enough for our uses (1)

  2. Extrapolated by multiplying CaCO3 level by 1.22 (2)

  3. http://howtobrew.com/section2/chapter13-2.html (3)