Flow Rate Mastery: Perfect Your Cold Brew with Brezi

Flow rate isn't just a drip—it's the heartbeat of your cold brew. Traditional Kyoto-style towers rely solely on gravity, making consistent extraction notoriously challenging. Brezi, however, redefines precision, empowering you with flow rates adjustable from 0.05 mL/s to 0.70 mL/s, opening the door to a world of controlled flavor exploration.

Why Flow Rate Matters (More than You Think)

Research clearly demonstrates the influence of flow rate on coffee extraction:

• Slow Flow Rates (around 0.05–0.15 mL/s):
  Increase extraction yield, delivering deeper, syrupy sweetness and full-bodied intensity due to prolonged contact between water and grounds (Cordoba et al., 2020).

• Moderate Flow Rates (0.15–0.40 mL/s):
  Balance sweetness and acidity, extracting a broader range of desirable flavor compounds, ideal for nuanced, complex cups.

• Faster Flow Rates (0.40–0.70 mL/s):
  Produce lighter, brighter brews with distinct floral and fruit-forward characteristics, minimizing bitterness by reducing extraction of heavier phenolic compounds.

Brezi's Precision Advantage

Historically, precise flow control required painstaking manual adjustments. Brezi’s digital flow control removes guesswork, ensuring each brew replicates your ideal extraction every time. Imagine effortlessly crafting cups that range from bold, dessert-like intensity to delicately crisp and refreshing—simply by adjusting the drip.

With Brezi, precision becomes intuitive, putting professional-level control directly into your hands.

References:

• Cordoba, N., Moreno, F.L., & Osorio, C. (2020). Effect of flow rate on cold-drip coffee extraction kinetics and chemical composition. Food Chemistry, 321, 126694. DOI: 10.1016/j.foodchem.2020.126694