Nucleus Coffee Tools
Sources: Nucleus Coffee Tools (website)
Nucleus Coffee Tools Pty Ltd is an Australian specialty coffee equipment manufacturer founded by Saša Šestić, the 2015 World Barista Champion and the person credited with introducing carbonic maceration processing to specialty coffee. Director Sam Corra was runner-up at the 2017 World Brewers Cup. The team has collectively operated four coffee farms, a world-renowned roastery, and some of Australia’s most innovative coffee bars, and has collaborated with the world’s leading coffee research university in Switzerland. (source: Nucleus Coffee Tools (website))
Nucleus sells exclusively through resellers — no direct-to-consumer sales — with a global distributor and service centre network.
The LINK Sample Roaster
The LINK is Nucleus’s flagship product for the specialty roasting market: a hot-air convection sample roaster for 50–100 g batches, designed for green coffee evaluation, roast profile development, and competition preparation.
Technology and Design
The LINK uses hot-air convection (no drum) with a notable thermal approach: roasting begins at room temperature, with the internal bean temperature matching the ambient temperature from the very first second. This differs from conventional drum roasters, which pre-heat to a charge temperature before loading beans. Claimed effects:
- More even roast development
- Lower CO₂ levels in the finished bean (earlier readiness to taste)
- Earlier and more accurate expression of the coffee’s cup profile
Fan speed calibration allows adjustment for elevation and atmospheric conditions — directly relevant for roasting at altitude (El Salvador’s highlands, or any origin sample-roasting facility). (source: Nucleus Coffee Tools (website))
Specifications
| Feature | Spec |
|---|---|
| Roasting system | Hot-air convection; no drum |
| Capacity | 50–100 g |
| Dimensions | 120mm (W) × 120mm (L) × 450mm (H) |
| Roaster weight | 2.4–2.6 kg |
| Weight in travel case | 8.4–8.8 kg |
| Roast chamber | Aluminium |
| Hopper | Double-layer borosilicate glass |
| Voltage | 100V (Japan), 110V, 220V |
| Plug types | A, F, G, I, N (others on request) |
| Warranty | 1 year (through reseller) |
(source: Nucleus Coffee Tools (website))
The travel case is military-grade and water-resistant, making the LINK portable for origin visits and competition travel.
Software
LINK App (iOS/Android): density tube integration, variety and processing method selection, mobile custom profiling.
LINK Studio (Mac/Windows): 1,000+ pre-loaded roast profiles, live tracking with real-time data, full custom profile editing. Download hosted on Kaffelogic’s web servers (webservices.kaffelogic.com) — reflecting the technical depth of the Kaffelogic–Nucleus partnership (see below). (source: Nucleus Coffee Tools (website))
Pricing
No pricing listed on the website. Nucleus sells only through resellers. The existing Roast Rebels listing prices the LINK at approximately €1,580 ex. VAT. (source: Roast Rebels (website))
Competition Credentials
World Coffee Roasting Championship (WCRC)
The LINK is the official sample roaster of the WCRC 2024–2027, provided to all competitors — the highest-profile endorsement a sample roaster can receive. Nucleus and Kaffelogic co-sponsor this sponsorship (see Partnership section). Additional official sponsorships in 2024: Korea, Indonesia, Taiwan, Poland, Czech Republic, and Thailand national championships. (source: Nucleus Coffee Tools (website))
World Brewers Cup (WBrC)
- 2024: Martin Wölfl (Austria) — 1st place using the LINK
- 2021: Matt Winton (Switzerland) — 1st place (attributed to the LINK by Nucleus; see note below)
Note: The Kaffelogic page also claims 2 WBrC championship wins for the Nano 7, and identifies Carlos Medina as a WBrC champion using the Kaffelogic. Since the LINK was commercially launched around 2022–2023 (earliest product page content dates from January 2023), Matt Winton’s 2021 win predates the LINK’s public availability — it is likely Winton used the Kaffelogic Nano 7, not the LINK. The 2021 attribution in Nucleus’s marketing may refer to Winton’s involvement with the Nucleus/Kaffelogic ecosystem during prototype development. Verification needed.
Kaffelogic Partnership
Nucleus Coffee Tools and Kaffelogic (New Zealand) maintain a significant technical and commercial partnership:
- LINK Studio software is served from Kaffelogic’s web infrastructure (
webservices.kaffelogic.com/downloads/link-studio-*) - The two companies jointly sponsor the WCRC as co-official sample roasters 2024–2027
- The LINK and the Kaffelogic Nano 7 represent complementary products from the same Oceanian ecosystem: one maximizing portability and competition credentials (LINK), the other emphasizing batch flexibility and open software control (Nano 7)
This partnership has not been widely publicized but is apparent from the software download URLs. (source: Nucleus Coffee Tools (website))
YouRoast Program
Via the YouRoast initiative, Nucleus connects LINK users with exclusive and rare green coffees sourced from producing countries where the company has established relationships. Nucleus develops custom roasting profiles for these specific lots, which can then be replicated exactly by any LINK user worldwide.
This program is relevant to Kaiserblick: a future YouRoast collaboration would allow El Salvador micro-lots to reach a global audience of engaged specialty roasters, each roasting from the same verified profile. (source: Nucleus Coffee Tools (website))
Other Products
Nucleus makes several barista and café preparation tools alongside the LINK:
| Product | Category | Function |
|---|---|---|
| Paragon Espresso | Espresso | Extract chilling; temperature-profiled espresso extraction |
| NCD Pulse | Espresso | Coffee distributor with Pulse Vibration Technology for even puck density |
| NCD (original) | Espresso | Blade distributor without vibration |
| Bloom | Filter | Brew bed preparation tool — retractable straight + fan needles, FlowTip indentation |
| Compass | Sensory | Tasting/sensory tool |
| Stem | Brewing | Brewing accessory |
The Paragon and NCD Pulse are used by competition baristas at national and world championships across dozens of countries. The Bloom is endorsed by Martin Wölfl (2024 WBrC champion). (source: Nucleus Coffee Tools (website))
Company Background
- Founder: Saša Šestić — 2015 World Barista Champion; introduced carbonic maceration to specialty coffee (see Carbonic Maceration)
- Director: Sam Corra — 2nd place, 2017 World Brewers Cup
- Entity: Nucleus Coffee Tools Pty Ltd (Australian company)
- Team background: four coffee farms, world-class roastery, innovative Australian café operations
- Research partnership: collaboration with the world-leading coffee university in Switzerland
- Coaching: Nucleus-affiliated coaches have trained multiple national and world champions, including the first female World Barista Champion and the first WBC finalist from Africa
(source: Nucleus Coffee Tools (website))
Relevance to Kaiserblick
The LINK is one of three leading sample roasters (alongside ROEST and IKAWA) with strong specialty/competition credentials. Key considerations for Kaiserblick:
- Altitude calibration: Fan speed calibration for elevation is a concrete advantage at Kaiserblick’s origin facility or roastery in El Salvador’s highlands
- Room-temperature start: removes the pre-heating step common to drum roasters, potentially simplifying on-site use at origin
- YouRoast: a potential channel for marketing Kaiserblick micro-lots to a global network of specialty roasters
- Competition ecosystem: the LINK’s WCRC sponsorship means competition-track buyers and roasters worldwide will be familiar with the machine