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THE MAIN INGREDIENTS OF BEER
from test_book_guide
by HYENA HOWL
It’s important to note that different beer styles and variations can utilize various combinations and proportions of these ingredients to create a wide range of flavors, aromas, and characteristics in beer.
Water Water makes up the majority of beer’s composition, typically accounting for around 90-95% of the final product. The quality and mineral content of the water can significantly impact the flavor and character of the beer.
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Malted Grains The primary grain used in beer production is barley, although other grains like wheat, rye, oats, and corn can also be used. Barley is malted by soaking, germinating, and drying the grains to activate enzymes that convert starches into fermentable sugars.


Hops Hops are flowers of the hop plant and play a crucial role in beer. They contribute bitterness, flavor, and aroma to balance the sweetness of the malt. Hops also act as a natural preservative, helping to prevent bacterial growth and enhancing the beer’s stability.
Yeast Yeast is responsible for fermentation, converting the sugars in the wort into alcohol and carbon dioxide. There are two primary types of yeast used in beer brewing: ale yeast (Saccharomyces cerevisiae) and lager yeast (Saccharomyces pastorianus). Each yeast strain produces different flavors and characteristics in the final beer.

Optional Ingredients
Adjunct Grains
In addition to malted barley, brewers sometimes use adjunct grains like corn, rice, oats, or wheat to modify the flavor, body, or texture of the beer.
Sugar
Brewers may add sugar to the beer to boost alcohol content or create specific flavors. Different sugars, such as sucrose, maltose, or honey, can be used.
Spices and Herbs
Additional ingredients like spices (e.g., coriander, cinnamon, ginger) or herbs (e.g., chamomile, sage, thyme) can be added to create unique flavors and aromas in specialty beers.

Fruits
Many beer styles incorporate fruits such as citrus, berries, or tropical fruits to add sweetness, acidity, or fruity flavors.
Water Treatments
Some brewers adjust the mineral content of the water to mimic the characteristics of brewing water in specific regions or to achieve desired flavor profiles.