Beer Flashcards
Beer predates wine as one of the oldest alcoholic beverages known to man, only ____ surpasses it in age
mead
Why are grains trickier than grapes for fermentation?
Grain’s starch must first be converted into sugar before fermentation can commence
How is the brewing process twofold?
- The brewer must derive the wort
2. ferment the wort
What is wort?
A sugar-rich liquid, from malted grain
What 4 ingredients are typically utilized in brewing?
water, yeast, a starch source, and hops
What are hops?
A flower that adds flavor and bitterness, and has both preservative and antiseptic qualities that prohibit bacterial growth
What was the Bavarian Purity Law (Reinheitsgebot) of 1516?
It codified the 3 ingredients authorized for beer production as barley, hops, and water (The action of yeast in fermentation was not known)
Why was wheat not included in the Bavarian Purity Law?
Now a component of Hefe Weizen and White Beer styles, it was then reserved for the production of bread
What is the first step in the modern brewing process?
To create the malted barley, or malt.
Why is the barley in beer-making, steeped in water for approximately two days?
to promote germination of the grain
When the grain sprouts, an enzyme called ___ is produced, which does what?
amylase, will convert the starchy carbohydrates of the grain into the fermentable sugars maltose and dextrin
Before roasting the barley, what is the product called?
his “green malt”
What determine the length and degree of roasting?
The style of beer desired
What style of beer is a result of heavy roasted black malts?
porter-style beers
What style of beer is a result of pale malt that is dried at low temperatures and very light in color?
pale ales
What are the steps of Beer making?
- Malt the barley
- Extract Wort
- Add Hops for bitterness, flavor
- Wort Boiled
- Fresh hops added for freshness, aroma
- Wort cooled for fermentation
- Lager vs. Ale decision
- Yeasts added, fermentation
Once the grain is malted, what is produced?
The malt is ground, or cracked, in a mill to produce GRIST
What is the mashing process?
When the grist (ground malted barley) is combined with hot water in a mash tun, mashing process lasts 1-2 hours, converting and extracting sugar from the malt
What is the result of the mashing process?
The flavor-, sugar- and color-rich wort.
What is sparging?
Rinsing the spent grains (after wort is filtered off) with fresh water to extract additional sugar and flavor, although this may lead to unwanted bitterness in the finished brew
What is a synonym for the brew kettle where the wort liquid is boiled?
“copper”
What is placed in the brew kettle?
wort, hops are added (and sparge if being used)
The wort is then brought to a sustained, roiling boil for at least one hour, what does this achieve?
Boiling the wort stabilizes and sterilizes the brew, darkens the color, and causes excess water to evaporate
What to hops contribute but also lose in the brew kettle?
More bitterness the longer they boil, but lose aroma
In order to retain fleeting, volatile hop aromas, the wort may pass through what?
A hopback chamber prior to chilling
____ encounter the hot wort, and contribute ____
Fresh hops, fresh aromas