This contents of this page are copyright 1996 by Jay S. Hersh and may not be reproduced in whole or part without the author's express written consent. Dr. Beer ® is a registered trademark of Jay S. Hersh.
This page is mantained by Jay Hersh aka Dr. Beer ®
Maine Brewery Workers Assoc., Portland, ME 5/20/96
Reference Beer == Bud Light size = 12 oz. long neck bottles ul - micro Liter ml - milli Liter
Flavor/Aroma Amount Drink? Comment
------------ ---------- ------ -------------
1) Alcohol 12ml pure ethanol Y flavor better than aroma
2) estery 250ul banana extract Y weak to good
124ul Strawberry extract back off the strawberry it was pretty strong
3) nutty 75ul almond extract Y good
4) diacetyl 90ul butter extract Y strong
5) phenol 10mg N audience said weak but I got it, try going to 11 or 12
5.5) BandAid 100 ul guaiacol N strong to overwhelming try dropping to 50ul
phenol obtained frem Ed Westmeier, concentration of solution used unknown
Fix says detectable at .3mg/L
6) clove 3 eyedropper drops Y mixed response weak to good
clove extract
6.5) Clove 8 ul eugenol N good
7) Stale open bottles to air, recap, Y good this time
heat under heater for 5 days
8) Skunky Previously dark strored, Y Good darken caps on both samples to avoid bias
fresh Molson in sun 3 days
9) Sulfury 30 mg Potassium N only half got it could be bumped up
Metabisulfite (K2S2O5)
delivered as 120 ul of solution Joyce made up
10)Lactic 380ul 85% DSP Lactic Acid Y good
(i.e. food grade!!!)
11) DMS 0..10ul (made by diluting N OK
50uL pure DMS to 50ml
w/ pure ethanol, then
adding 100ul of this to each bottle)
12) Sour 4 ml white wine vinegar Y still a little too strong
13) Hoppy 50 ul Hop Oil extract Y weak
Comments
next time try a boiled grain ektract after hoppy sample to differentiate bitterness and astringency