Beer Stability

Question 1

Define Oxidation

Answer 1

Beer chemically reacting to excess Oxygen

Question 2

5 flavor effects of beer oxidation

Answer 2

Stale
Winy / Sherry
Wet cardboard
Papery
Leather

Question 3

5 brewhouse oxygen control measures

Answer 3

Not vortexing mash agitator
Low whirlpool entrypoint (1/3rd of wort height)
Close wort grant
Not exposing grain bed during lauter
Fast run offs

Question 4

List 4 filtration O2 control measures

Answer 4

CO2 blanketing
No mixer vortexing
Using deaerated water during filtering
Diluting with deaerated water

Question 5

If O2 is quickly removed from beer, there is no damage. T/F?

Answer 5

False. Outdated ideas of “flushing out oxygen” have proven false.