Easy VacBrew Flash Brew – Japanese Iced Coffee in 5 Minutes

Easy VacBrew Flash Brew – Japanese Iced Coffee in 5 Minutes

Why Flash Brew Shines

Flash brew uses hot water (195–205°F) to fast-track coffee’s flavors—bright acids, sweet sugars, and rich oils—then chills it over ice to lock in aromas like citrus, berry, or caramel. It’s faster than cold brew and brings a lively, full-bodied profile that’s perfect for hot days. With the VacBrew, you get:

  • Vivid Flavor: Hot water extracts 18–22% of coffee’s solubles for intense, layered notes.
  • Silky Body: The metal filter keeps oils for a smooth, rounded mouthfeel.
  • No Fuss: The manual vacuum pump makes extraction clean and effortless.

The VacBrew’s -0.5 bar vacuum pull creates a polished, barista-quality cup in minutes. Here’s the simplest way to do it.

What You’ll Need

  • VacBrew (with metal filter and manual vacuum pump)
  • Coffee: 25g, medium-fine grind (~500–700 microns, like table salt)
  • Water: 150ml hot (195–200°F / 90–93°C), filtered
  • Ice: 150g cubes (fills carafe ~halfway)
  • Kettle: For hot water (any type works)
  • Orange Stirrer: For stirring
  • Optional: Scale 

Bean Pick: Light/medium roast (e.g., Ethiopian for fruity/floral, Colombian for nutty/caramel). Freshly roasted (2–4 weeks).

Easy VacBrew Flash Brew Recipe

This makes ~300ml (10 oz) of ready-to-drink iced coffee. The 150ml hot water brews a ~1:6 concentrate, diluted to ~1:12 by melting ice. Total time: ~5 minutes.

  1. Fill Carafe with Ice Add 150g ice cubes to the VacBrew’s glass carafe (~halfway full). Set it under the brew chamber. Clear, large cubes melt evenly for perfect dilution.
  2. Add Coffee Grind 25g coffee to medium-fine (coarsen to ~700 microns if vacuum slows). Pour into the brew chamber (metal filter in place). Shake to level.
  3. Pour Water Heat 150ml water to 195–200°F (just off boil; let kettle sit 30 seconds). Pour all 150ml over the grounds in one steady stream. The VacBrew’s chamber spreads water evenly—no need for fancy pouring.
  4. Stir and Steep Stir gently for 5–10 seconds to fully wet the grounds. Steep for 2 minutes. This quick steep extracts bright flavors while hot water maximizes solubles.
  5. Pump to Extract Press the manual vacuum pump to start the -0.5 bar pull to extract coffee into the ice-filled carafe. Coffee hits the ice, chilling and diluting instantly.
  6. Swirl and Sip Swirl the carafe to mix coffee and melted ice. Pour into a chilled glass. If too strong, add 20g ice or cold water.

What You’ll Taste

Your flash brew will burst with lively flavors—think zesty lemon or jasmine from an Ethiopian, or smooth caramel from a Colombian. The metal filter gives a velvety, medium-full body, crisp and refreshing. Caffeine: ~140–170mg per 8 oz. It’s vibrant, never flat, with a clean, summery finish.

Why VacBrew Makes It Effortless

  • Manual Pump Ease: Just one touch for a clean, controlled extraction—no barista skills required.
  • Metal Filter Magic: Keeps oils for rich body, skips paper filter hassle, and cleans fast.
  • Ice-in-Carafe Chill: Brewing into ice locks in aromas, avoiding stale, fridge-chilled vibes.
  • Quick Cleanup: One pour, one steep, one pump—done in 5 minutes.

Tips to Perfect It

  • Grind Check: Medium-fine for bold flavor; coarsen to ~700 microns if pump clogs.
  • Water Temp: 195–200°F is key. Above 205°F risks bitterness; below 190°F mutes flavor.
  • Ice Balance: 150g ice is spot-on. For stronger, use 130g or 28g coffee.
  • Stir Well: Ensures even extraction for max flavor.
  • Clean Filter: Rinse metal filter post-brew to keep flavors fresh.
  • Beans: Light roasts pop with brightness; medium roasts balance depth.

Troubleshooting

  • Too Diluted? Use 28g coffee or 130g ice. Check water temp for strong extraction.
  • Bitter? Lower temp to 190°F, steep 1:30 minutes, or coarsen grind.
  • Pump Slow? Clean filter, coarsen grind, or check pump seal.

Join the Brew Crew

This VacBrew flash brew is your go-to for bold, chilled coffee that’s ready in a snap. It’s perfect for busy days or wowing friends with your coffee chops. Snap a pic of your icy masterpiece, tag us on #vacbrewcoffee. Love a specific bean or ratio? Drop it in our comments—let’s brew better together!

Grab your VacBrew, some ice, and make Japanese iced coffee magic. Happy sipping!

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