Common Man / EST.2013
Open · Martin Rd
Bulletin № 142
Martin Road, Singapore 239063
Week of 19 April 2026 · Cycle: Harvest Q1 Ethiopia
Current Barista
R. Tan · Shift 07:00→15:00
Grind dial 3.2 · EK43S
Today's Single Origin
Yirgacheffe, Konga Wet Mill
Washed · Batch C-2603

Coffee, on record.
A roastery, a brew bar,
and an academy.

Roastery Output / wk
412 kg
Active Origins
14 countries
Academy Graduates (cum.)
1,842
Years On Record
13 yrs
§ 0.1 — preface

Coffee is a working document. We log every batch, publish every dial-in, and print tomorrow's menu before close. If you want to see how specialty actually operates — ledger, lab, line — you're in the right shop.

Today brewingYirgacheffe Konga · Washed · 1:2.2 · 9.1s Roasting nowBatch C-2604 · Sumatra Aceh Gayo · 12 min 44 s Academy seat countIntro to Espresso · 6 of 8 seats · Sat 26 Apr House blendESTATE · 60% Brazil / 40% Ethiopia · Drop 18 Apr On tapCold brew · Kenya Nyeri AA · Batch 214 Today brewingYirgacheffe Konga · Washed · 1:2.2 · 9.1s Roasting nowBatch C-2604 · Sumatra Aceh Gayo · 12 min 44 s Academy seat countIntro to Espresso · 6 of 8 seats · Sat 26 Apr House blendESTATE · 60% Brazil / 40% Ethiopia · Drop 18 Apr On tapCold brew · Kenya Nyeri AA · Batch 214
§ 02

The brew, spelled out.

Updated by R. Tan · 07:12 SGT
Method Ratio Dose / In Out / Yield Time Temp Grind (EK43S) Notes
Espresso1 : 2.218.5 g40 g30 s93.5 °C3.2cocoa, plum, long finish
Flat White1 : 3.7518.5 g40 g + 110 ml milk62 °C3.2silky, foam ≤ 5 mm
V60 021 : 1615 g240 g3 m 10 s94 °C9.5brightness first, body second
Batch Brew1 : 16.660 g / L1 L5 m 40 s94 °C7.8bypass 15%
AeroPress1 : 1417 g240 g1 m 50 s87 °C6.2inverted, 30-s steep
Cold Brew1 : 1190 g / L1 L16 hr4 °C4.5kegged, N₂ optional
EK43S · common fine-grind reference
Time = brew time, not total contact
All specs calibrated daily at 07:00 SGT
§ 03

The roast log. Always current.

Loring Kestrel S15 · 40-kg drum
C-2604
Sumatra Aceh Gayo
Wet-hulled · 1,400 masl
Med-Dk
42 kg
19 Apr 06:50
C-2603
Yirgacheffe Konga
Washed · 1,950 masl
Light
28 kg
18 Apr 07:04
C-2602
Estate Blend (House)
BR 60 · ET 40
Medium
96 kg
18 Apr 09:20
C-2601
Colombia Huila Paraíso
Washed · 1,750 masl
Light
6 kg
17 Apr 06:42
C-2598
Kenya Nyeri AA
Washed · 1,850 masl
Light
18 kg
15 Apr 08:10
C-2595
Brazil Cerrado Natural
Natural · 1,180 masl
Medium
54 kg
12 Apr 06:58
C-2590
Guatemala Huehuetenango
Washed · 1,600 masl
Med-Lt
3 kg
09 Apr 09:12
§ 04

The Academy, open to the trade.

SCA accredited · Q-grader on staff
AC-101

Intro to Espresso

One day · 7 hr

Grind to extraction. Dialling an espresso until it tastes like the roaster meant it to.

Cohort
8 seats
Fee
S$ 380
Next
Sat 26 Apr
Level
Beginner
AC-201

Latte Art · Foundations

Two evenings · 6 hr

Heart, tulip, rosetta. Milk texture, temperature discipline, muscle memory.

Cohort
6 seats
Fee
S$ 420
Next
Tue/Thu 6 May
Level
Intermediate
AC-301

Sensory Skills

Two days · 14 hr

SCA sensory skills foundation. Cupping protocol, triangulation, aroma kit walk-through.

Cohort
10 seats
Fee
S$ 780
Next
Sat–Sun 17 May
Level
All levels
AC-401

Barista Pathway

Five days · 40 hr

A full industry-entry programme. Graduates staff specialty bars across Asia.

Cohort
6 seats
Fee
S$ 2,480
Next
Mon 2 Jun
Level
Career
Corporate bookings · workplace coffee programs · custom curricula
academy@commonmancoffeeroasters.com →
§ 05 Essay
Why the ledger matters

By
H. Grover, founder

Filed
14 Apr 2026

When we opened in 2013, Singapore's specialty scene was a dozen bars long. You could count the roasters on one hand. The question we started with was simple: what would happen if every cup on the bar came with its own working file — origin, farm, altitude, processing, roast date, dial, yield, barista — written down in a place the customer could actually read?

Thirteen years in, the ledger is still our discipline. Bags leave our door with the recipe on them. The menu is printed every morning. The brew bar publishes its dial-ins on a chalkboard the size of a small Ford.

None of this is theatre. We do it because coffee gets worse when the people making it stop noticing. The ledger is a promise to keep noticing.

Pull-quote Coffee
gets
worse
when
the
people
making
it
stop
noticing.

Come by. Bring a question.

Address
22 Martin Road, #01-02
Singapore 239063
Phone
+65 6836 4695
Email
hello@commonmancoffeeroasters.com
MRT
Havelock · EW24 · 4 min walk
Parking
UE Square · 60 m
Open in Maps →

Hours

Monday07:30 — 19:00
Tuesday07:30 — 19:00
Wednesday07:30 — 19:00
Thursday07:30 — 19:00
Friday07:30 — 22:00
Saturday08:00 — 22:00
Sunday08:00 — 18:00