2025 KBrC 코리아 브루어스 컵 챔피언십 부자로스터 유대현 결선 4위 풀 시연 영상

Main ideas, concepts, and lessons

• Coffee quality depends on roasting and extraction

  • Even with good ingredients, coffee will not taste good if roasting or extraction is incorrect.

• A mindset of persistent challenge drives growth

  • The speaker’s coffee journey began while developing a “stone” with their father.
  • They describe repeated failures and frustrations, but continuing anyway.
  • Fear accompanies new attempts, and growth comes from overcoming that fear.
  • This philosophy is applied to coffee: continuous iteration of roasting/extraction improves taste.

• A specific coffee is used to embody their journey

  • Coffee showcased: Nirvana Geisha from Finca Deborah Farm (Panama).
  • Farming/harvest and processing details are presented to support flavor complexity and consistency:
    • Grown at high altitude (~1900m).
    • Naturally flushed processing.
    • Hand-picked at 20–22 Brix (sugar content) when fully ripe.
    • Immediately transferred to a tank and flushed with nitrogen to remove oxygen.
    • Temperature-controlled fermentation is described as crucial for developing complex flavors.
    • Drying uses a Taiwanese chamber with controlled temperature/heat/humidity/airflow, and constant stirring.
    • Drying duration: 20–25 days.
    • Final moisture stabilized to 11%.

• Methodology: roasting approach, then extraction approach

  • Roasting and brewing are given as a step-by-step technical recipe (times, ratios, equipment).
  • The speaker frames these technical steps as the “result” of their personal experimentation and improvement.

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Detailed methodology / instruction-style bullet points

Coffee processing (Nirvana Geisha)

Grow and harvest

• Cultivation: high altitude (~1900m mentioned).
• Process: “natural flushed.”
• Harvest: hand-picked when ripe with 20–22 Brix sugar content.

Oxygen removal / tank step

• Immediately move cherries to a tank.
• Flush with nitrogen to remove oxygen.
• Goal (as described): keep components intact and refine cells toward a “cleaner, more fibrous” state for fermentation.

Flavor creation through fermentation

• Maintain fermentation temperature as the most critical factor.
• Monitor multiple times per day to keep fermentation at the optimal temperature for complex flavors.

Drying

• Transfer beans to a special Taiwanese drying chamber with a three-tiered surface.
• Precisely control: temperature, heat, humidity, airflow.
• Stir continuously throughout the day.
• Dry 20–25 days at a safe temperature.
• Target stabilization: moisture content to 11%.
• Outcome: fruit flavor absorption and drying stability.

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Roasting (equipment and parameters)

Roaster

• Use a B180 gas roaster.

Flavor development strategy

• Inject as much smoke as possible during the initial drying phase to enhance aroma and flavor.
• During the heating phase, gradually lower heat to achieve good sweetness and balance.

Total roasting time

• 6 minutes 58 seconds

Phase breakdown (percentages)

• Drying phase: 49%
• Maillard phase: 34%
• DTR: 17% (acronym not defined in subtitle)

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Extraction / brewing (equipment, grind, water, timing, serving)

Water treatment

• Purify water using Brita Fresh C50 activated carbon (coconut carbon; “highest grade” stated).
• Intended effect: clean taste and subtle sweetness from the water itself.

Extraction tool and temperature control

• Use a drip system (the name “Gatlin” is mentioned; likely a dripper/heating/temperature-stable setup) designed to keep temperature stable.

Grinder and grind

• Grinder: Comandante C40.
• Grind amount: 14 g
• Grind size: 24 Klick (described as slightly finer than coarse salt)

Water temperature

• Brew temperature: 90°C
• Aim (as stated): express complex acidity.

Dripper design

• Equipment: MK Dripper.
• Features:
  • five wide outlets
  • convex central design
• Intended effect:
  • minimize water clogging near filter contact
  • ensure consistent extraction across flavors and body

Coffee-to-water ratio

• Extraction ratio: 1 : 14.15

Pouring method and schedule

• Pour 50 g of water in four stages.
• Each stage interval: 45 seconds.
• Purpose: consistency across aroma, flavor, acidity, sweetness, and mouthfeel for each stage.

Total extraction time

• 3 minutes

Sensory cup (serving vessel) purpose

• A wide-bottom cup that narrows toward the top.
• Intended effect: aroma/flavor spreads and delivers more smoothly near the mouth.
• White cup color reduces visual bias, encouraging smell/taste focus.

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Tasting/notes routine (as a prompted instruction)

• The speaker asks the audience/judges to take “notes” and be ready.

• Repeated aroma checks:

  • Hold the cup by the mug lid (cup may be hot).
  • Use the spoon provided on the right to check aroma three times.
  • After each aroma check, wait a moment.
  • The speaker serves coffee and repeats similar prompts multiple times.

• Flavor structure described for the coffee:

  • Aroma notes (color/fruit associations)
  • Flavor notes hot vs. cooling
  • Aftertaste notes hot vs. cooling
  • “City flavor,” “Sweeney’s flavor,” and mouthfeel/texture descriptions

• Closing tasting cue

  • Judges and audience are encouraged to enjoy the coffee comfortably shortly after the demonstration ends.

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Main flavor descriptors reported (hot vs. cooling)

(As stated by the speaker; subtitle wording is sometimes slightly unclear, but the structure is consistent.)

Aroma

• Berries evoke purple, with blueberry aroma mentioned.

Hot vs. cool flavor notes

• Hot: cranberry, raspberry, pineapple
• Cooling: lemon tea flavor emerges

Aftertaste

• Medium intensity:
  • Hot: pineapple and blueberry finish
  • Cooling: long aftertaste of pineapple juice

City flavor (medium intensity)

• Hot: blueberry trifle + acai berry juice
• Cooling: vibrant trifle of lemon

Sweeney’s flavor (medium-plus intensity)

• Hot: blueberry + acai sweetness
• Cooling: sweetness persists; pineapple sweetness continues

Mouthfeel

• Medium intensity overall
• Hot: silky
• Cooling: round, pleasant, juicy

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Speakers / sources featured

• Bu Dae-won (main speaker; described as creator of the “coffee stone” and roaster/extraction practitioner)
• Music (background music cue; no specific artist named in subtitles)

Coffee/source origin mentioned

• Finca Deborah Farm, Panama (farm source for “Nirvana Geisha”)

Equipment/brands referenced (not speakers)

• B180 gas roaster
• Brita Fresh C50 activated carbon
• Comandante C40 grinder
• MK Dripper
• MK Sensory Cup (“to be provided” cup)