Signature
View detail
Signature Reserve
The defining expression of volcanic Java
$18
250g
CocoaToasted HazelnutVolcanic Smoke
Degassing· 4d
Central Java · Indonesia
Born from Fire.Brewed for Greatness.
Single-origin Arabica, cultivated on volcanic soil and roasted in small batches. One of Indonesia's most considered cups — worth discovering.
Scroll
Single Origin✦Volcanic Soil✦Hand Harvested✦Small Batch Roasted✦Export Ready✦100% Arabica✦Central Java✦
Single Origin✦Volcanic Soil✦Hand Harvested✦Small Batch Roasted✦Export Ready✦100% Arabica✦Central Java✦
Why Rodtan
Six disciplines behind a single cup.
We do not chase volume. We pursue the quiet excellence that comes when volcanic soil, altitude, patience, and fire converge — then refuse to take shortcuts. These are the disciplines behind every pouch of Rodtan.
01
Volcanic Soil
Our Arabica is rooted in the mineral-rich ash of Central Java's ancient volcanoes — the same fertility that fed civilizations now feeds every bean.
02
High Altitude
Cultivated above 1,200 metres where cool mountain nights slow the cherry's maturation, concentrating sugars and complexity into the seed.
03
Hand Harvesting
Each cherry is selected by hand at peak ripeness. Only the deepest reds make the cut, sorted with a patience that machines cannot replicate.
04
Artisan Roasting
Roasted in small batches on convective drum systems, profiled across drying, Maillard, and development phases to honour the origin's voice.
05
Full Traceability
Every pouch carries its estate, harvest date, and roast profile. From volcano to cup, the journey of your coffee is never hidden.
06
Sustainable Practice
Shade-grown beneath native canopy, water-conscious processing, and fair partnership with the families who tend the land we depend on.
1,600m
Peak altitude
40+
Export countries
86+
Cupping score
6h
Roast to seal
Signature Collection
Four expressions of one volcanic origin.
Each lot is roasted to order and sealed within six hours. Choose by character, or let our concierge curate for you.
Estate
View detail
Volcanic Estate
Grown where the earth still breathes fire
$22
250g
Stone FruitMolassesCedar
Degassing· 6d
Limited
View detail
Limited Edition · Eruption
A micro-lot released only when the harvest sings
$34
250g
Dark ChocolateDried FigBlack Spice
Peak· 9d
Gift
View detail
Heritage Gift Box
Three origins, one volcanic legacy
$68
3 × 250g
CocoaStone FruitDark Chocolate
Peak· 13d
Roast Finder
Find your volcanic match.
Four questions. One recommendation, drawn from our volcanic collection — tuned to your palate.
Question 1 of 40%
When do you reach for coffee?
The Journey
From volcano to cup.
Seven stages, each governed by a discipline that cannot be rushed. This is the path every Rodtan bean travels.
- IOrigin · Central Java
Volcanic Land
Soil formed over millennia from volcanic ash — rich in phosphorus, potassium, and trace minerals that shape the bean's character.
- IIAltitude · 1,200–1,600 m
The Farm
Shade-grown Arabica nurtured under native trees at altitude, where biodiversity protects the crop and deepens the cup.
- IIIMethod · Selective picking
Harvest
Cherries picked by hand, selectively and only at peak ripeness — a practice measured in patience rather than volume.
- IVGrade · Specialty AA
Sorting
Defects removed by hand and by density. Only the densest, most intact seeds advance to the roaster.
- VRoast · Medium Dark
Roasting
Small-batch drum roasting across three thermodynamic phases — drying, Maillard, and development — profiled to the bean.
- VIFreshness · Roast-to-seal < 6h
Packaging
Sealed within hours of roasting in matte-black, nitrogen-flushed pouches with one-way valves to preserve aroma.
- VIIReach · 40+ countries
Worldwide Shipping
Dispatched to importers, roasters, cafés, and collectors across four continents — export-ready documentation included.
Roasting Philosophy
Fire is a language. We listen carefully.
Every roast moves through three thermodynamic phases — drying, Maillard, and development — each governed by time, temperature, and intention. We profile our volcanic Arabica to honour its origin rather than mask it.
Roast Profile · Medium Dark
The Thermal Journey
9:45
Total roast
Drying
Maillard
Development
0:00First Crack · 196°CDrop · 215°C
0130 – 45% of roast
Drying Phase
4:00 – 5:00 min·Charge 190–215°C → ~150°C
Green beans absorb heat and shed moisture (9–12% by weight). Chlorophyll degrades, shifting colour from green to pale yellow. Under-drying here leaves the core raw and the cup grassy.
0230 – 40% of roast
Maillard Phase
3:00 – 4:00 min·~150°C → 196–205°C
Reducing sugars react with amino acids to build thousands of flavour compounds and melanoidin pigments. Extending this phase deepens body and sweetness; over-extending flattens the cup.
0314 – 25% DTR
Development Phase
1:00 – 2:30 min·First Crack → Drop
Steam and CO₂ fracture the bean's cellulose — the audible first crack. Caramelisation peaks and acids soften, letting us shape the balance of sweetness, body, and origin acidity.
Roast Profiles
Target parameters by application — Development Time Ratio governs the final character.
| Profile | Duration | Drop Temp | DTR | Character |
|---|---|---|---|---|
| Specialty Light Filter | 8:30 – 11:00 min | 196 – 202°C | 14 – 18% | Highly acidic, tea-like, minimal roast flavour — terroir preserved. |
| Specialty Medium | 9:30 – 11:30 min | 210 – 220°C | 18 – 22% | Balanced acidity and sweetness; chocolate, caramel, toasted nut. |
| Specialty Espresso | 10:00 – 12:00 min | 215 – 220°C | 22 – 25% | Highly soluble, low acidity, heavy mouthfeel, dark chocolate & molasses. |
| SCA Cupping Standard | 8:00 – 12:00 min | 196 – 205°C | 15 – 20% | Light to medium-light; clean, non-scorched. The benchmark for evaluation. |
Compare
See them side by side.
Select up to three coffees and overlay their flavor profiles. Find the one that speaks to your palate.
Signature Reserve
Volcanic Estate
| Signature Reserve | Volcanic Estate | |
|---|---|---|
| Roast | Medium Dark | Medium |
| Process | Natural | Honey |
| Price | $18 | $22 |
| Weight | 250g | 250g |
| Sweetness | 8/10 | 7/10 |
| Acidity | 5/10 | 8/10 |
| Body | 8/10 | 6/10 |
| Aroma | 7/10 | 9/10 |
| Finish | 7/10 | 7/10 |
| Complexity | 7/10 | 8/10 |
Tasting Notes
Signature Reserve
CocoaToasted HazelnutVolcanic Smoke
Volcanic Estate
Stone FruitMolassesCedar
Add all 2 to cart
Total · $40
The Brew Guide
Brew it the way it deserves.
Four classic methods, each tuned for our volcanic Arabica. Choose your ritual and follow the parameters below.
Pour Over
A clean, transparent cup that lets the origin's character shine.
Ratio 1:16
Grind
Medium-fine
Time
3 – 4 min
Temp
92 – 96°C
Ratio
1:16
Method
- 1Rinse the filter with hot water and discard.
- 2Add ground coffee, level the bed, and bloom with 2× the coffee weight for 30s.
- 3Pour in slow concentric circles to the target weight.
- 4Let drawdown finish, then serve.
Brew Timer
Pour Over · 3 – 4 min
04:00Ready
Quick set:
Brewing Calculator
Find your perfect ratio.
Dial in your ideal brew with precision. Adjust the variables and watch your recipe update in real time.
2cups
Your Recipe
Coffee
30g
Water
480ml
Brew Time
4 min
Ratio
1:16
For 2 cups of Pour Over at Standard strength, use 30g of Rodtan with 480ml of water at 96°C.
A starting point — adjust to taste. Volcanic beans reward experimentation.
Export Excellence
Built for the world's most demanding buyers.
From a single pallet to a full container, our export desk manages quality control, documentation, custom roasting, and private label — so your lot arrives flawless, on schedule, anywhere on earth.
Export Ready
Fully documented international shipping with phytosanitary certification and origin traceability.
Quality Control
Every lot cupped and scored against SCA protocols before release. Defect thresholds enforced by hand-sorting.
Custom Packaging
Matte-black nitrogen-flushed pouches, configurable sizes, multilingual labels, and private-label printing.
Full Documentation
Commercial invoices, packing lists, certificates of origin, and fumigation handled end-to-end by our team.
OEM & Private Label
Build your own brand on Rodtan's volcanic foundation — custom roasts, blends, and packaging design.
Custom Roasting
Bring your target profile. Our roasters will develop and reproduce it across production volumes.
40+
Export destinations
12+
Years roasting
100%
Lot traceability
24/7
Concierge response
Concierge Wholesale
Let's build something exceptional together.
Tell us about your business and what you're looking for. Our export concierge will respond within one business day with a tailored proposal — never a templated quote.
Direct lineconcierge@rodtancoffee.com
WhatsApp+62 811 2000 400
Export deskMon–Fri · 09–18 WIB
Voices
Trusted by those who pour for a living.
“Rodtan's Volcanic Estate has become our house espresso. The molasses sweetness and cedar finish are unlike anything else we pour.”
Central Java, Indonesia
7°30'S · 110°00'E
About Rodtan
A house built on volcanic patience.
Rodtan was founded on a single conviction: that the volcanic soils of Central Java produce coffee worthy of the world's most discerning cups. We are growers, roasters, and stewards of a landscape that took millennia to become this generous — and we intend to honour every harvest it gives us.
Mission
To elevate Indonesian volcanic coffee to its rightful place among the world's finest — without compromise, without shortcuts.
Vision
A global community that recognises Central Java as a source of singular, traceable, responsibly-grown specialty coffee.
Origin
Our estates sit on the fertile volcanic slopes of Central Java, where mineral-rich ash and tropical altitude shape every harvest.
Craftsmanship
From selective hand-picking to small-batch drum roasting, every decision is made by people who taste the result.
Sustainability
Shade-grown cultivation, water-conscious processing, and fair, long-term partnership with the families who tend the land.
Heritage
We carry forward generations of Indonesian coffee tradition, presented with the restraint and care of a modern luxury house.
Questions
Considered answers.
All retail pouches are roasted to order and sealed within six hours. We ship within 48 hours of roasting, so your coffee arrives within the optimal 7–21 day window post-roast.
Indonesia · Volcanic Origin
Experience Indonesian volcanic coffee.
Born from fire. Brewed for greatness. Discover one of Indonesia's most considered cups.