Extraction
Why high extraction can still taste flat
A closer look at contact time, resistance, and the point where more yield no longer improves clarity.
Read →
Barista control standard
Brew ratios that hold up during the morning rush.
BarFlow gives coffee teams a disciplined way to set dose, beverage weight, water input, and extraction target before service starts. The calculator is designed for batch brew, pour-over, and training sessions where loose estimates create expensive drift.
⭐ 4.7/5 from 312 café users
4,217 calculations logged in practice drills
Built for roastery and bar training
Live station snapshot
Target brew ratio1:16.7
20 g dose
Water required334 ml
Yield aligned
Estimated strength1.34% TDS
Filter range
Shift note
A 3 g dosing error at a 1:15 recipe can move beverage strength enough to change perceived sweetness. Teams that log the ratio first usually waste less coffee during dial-in.
Brew Ratio Calculator
Use this for filter recipes, brew bar SOPs, and staff calibration sheets.
Water to pour334 ml
Expected beverage yield291.8 g
Estimated strength1.34% TDS
Dry coffee per litre59.9 g/L
How teams use BarFlow
A short routine keeps recipe decisions consistent across shifts.
1
Set the target cup profile
Choose a ratio based on the roast and service format before the first grinder adjustment. This prevents taste goals from moving every ten minutes.
2
Translate recipe into repeatable numbers
Dose, water input, beverage yield, and expected strength are calculated together so the brew card reflects what the bar actually needs.
3
Use the same figures in training
New staff learn faster when recipe language is objective. Trainers can compare cup quality against fixed inputs instead of memory.
From the BarFlow journal
Technical reading for brew leads, trainers, and owners.
Extraction
Café Workflow
The quiet cost of inconsistent puck prep
Workflow standards matter because one sloppy distribution step can ripple through an entire service period.
Read →
Water & Grind
Water chemistry and grind size should be adjusted together
Separate decisions create false confidence. Pairing them gives a cleaner and more stable dial-in process.
Read →What operators say
BarFlow is used in training rooms, QC tables, and on service floors.
★★★★★
We replaced a handwritten ratio sheet that varied by shift. After six weeks, our batch brew wastage dropped from 8.4% to 5.9% because everyone worked from the same starting number.
Helen DraperTraining Lead, North Quay Coffee
★★★★★
The value is not novelty. It is discipline. The calculator gives junior staff a clean framework, and that shows up in fewer avoidable remakes during breakfast trade.
Marcus FieldOperations Manager, Ledger Street Café
★★★★★
Our roasting team uses BarFlow during wholesale onboarding. The tool turns sensory language into practical recipe numbers that wholesale partners can follow on day one.
Priya SantosWholesale Educator, Foundry Roasters
Frequently asked questions
Answers based on café operations rather than theory alone.
Does the calculator work for immersion brewers
Yes. Use the same ratio logic, then compare the predicted beverage yield against your actual drawdown and retention pattern.
Why is retention included
Coffee grounds hold liquid. Ignoring that variable makes expected beverage weight look better on paper than it does in the cup.
Can I use BarFlow for cupping prep
You can. Teams often use it to map dose-per-litre figures before building a cupping table or educational tasting flight.
Should filter strength targets change by roast level
Usually, yes. Lighter coffees often reward lower strength with more clarity, while darker coffees may need careful restraint to avoid heaviness.
Is this suitable for training manuals
Yes. Many cafés transfer the output directly into brew cards, laminated prep sheets, and staff induction notes.
Does it replace tasting
No. It gives you a disciplined starting point so tasting can focus on refinement rather than guesswork.