¿Cómo Se Hace La Cerveza? [Proceso En Fábrica]

How is Beer Made in a Factory?

1. Mashing Process

• The video begins by explaining the initial step of beer production, which involves selecting the type of malt based on the desired beer style. Each malt type contributes unique flavors, colors, and sugar levels.

• Some brewers optionally moisten the grains to make the husk more flexible, facilitating milling and improving sugar extraction efficiency. The malt is then introduced into a mill where it is crushed to expose the endosperm without completely pulverizing the husk.

• After milling, consistency is checked; a good grind mixes floury particles with whole husks that aid in filtering during mashing. The milled malt is transferred to a mash tun where it will mix with hot water for sugar extraction.

• Gradual addition of milled malt to hot water prevents clumping. Once all malt is added, temperature checks are performed and adjusted as necessary. This mixture, now called "mash," rests in the mash tun allowing natural enzymes to convert starches into fermentable sugars.

• Maintaining a constant temperature optimizes enzymatic activity; some beer styles require stepped mashing where temperatures increase gradually to activate different enzymes at various ranges.

2. Lautering Process

• To clarify wort (the liquid extracted from the mash), recirculation occurs—liquid is drawn from the bottom and poured back over the grain bed for better filtration.

• After mashing, grains are rinsed with hot water in a process called sparging to extract remaining sugars, maximizing fermentable sugars in wort before transferring it to boiling kettles.

3. Boiling Wort

• The wort is gradually heated until boiling starts; this marks a countdown typically lasting between 60 and 90 minutes depending on recipe requirements. Constant boiling ensures effective sterilization of wort.

• Hops added at the beginning contribute bitterness through prolonged heat exposure that extracts alpha acids responsible for bitterness; hops can also be added later for flavor complexity or aroma preservation due to their volatile oils.

4. Cooling Wort

• Post-boiling, fire is turned off to stop cooking; trub (a mix of coagulated proteins and hop solids formed during boiling) may be removed either before or after cooling depending on brewer preference.

• Various heat exchangers like immersion coils or plate chillers cool down hot wort quickly by passing it through cold pipes or plates with circulating cold water or glycol refrigerant.

5. Fermentation Process

• Contamination prevention begins with cleaning and sterilizing fermenters before transferring cooled wort into them aseptically while introducing oxygen vital for yeast growth via agitation or direct injection.

• Choosing an appropriate yeast strain affects flavor profile significantly; yeast consumes fermentable sugars producing alcohol and CO2 while maintaining consistent fermentation temperatures crucial for yeast health and final beer profile.

Fermentation Process in Beer Brewing

Determining Fermentation Progress

• The fermentation is considered complete when the specific gravity measurement stabilizes for several days.

• After fermentation, the beer is cooled to near 0°C (32°F) to help precipitate yeast and other suspended solids.

Maturation of Beer

• The beer is transferred to a separate maturation tank at a lower temperature to promote sedimentation of yeast and particles.

• During maturation, flavors harmonize and develop; this process can last from a few days to several months, especially common in lagers or strong ales.

Filtration and Carbonation

• Filtration removes residual yeast, proteins, and other particles, resulting in clearer beer while carefully controlling the filtration speed to avoid unwanted flavor extraction.

• The dissolved CO2 level is measured to determine how much additional CO2 needs to be added; carbonation can be forced or natural.

Forced Carbonation Process

• For forced carbonation, CO2 is injected under pressure into a closed tank allowing even dissolution throughout the beer.

• In some cases, especially with bottled beers, a small amount of sugar or wort may be added before bottling for natural carbonation through secondary fermentation.

Final Steps: Packaging and Distribution

• After carbonation, the beer rests to ensure uniform CO2 dissolution and pressure stabilization before being packaged into kegs, bottles, or cans.