In this short but vital extract from the Aillio Bullet Masterclass, we deep dive into the technology that makes the Bullet roaster one of the most precise home/prosumer machines available: its innovative sensors!Understanding these sensors is key to unlocking consistent, professional-grade roast profiles.We break down the three main sensors, explaining exactly what they measure and how to use them for more consistent results:1. Bean Temperature (BT) ProbeThe classic probe, measuring temperature *in between* the beans. Useful for comparing against traditional roasters.2. Infrared Bean Temperature Sensor (IBTS)This game-changer measures the surface temperature of the bean (or the drum during pre-heat) for ultra-fast, precise, and volume-independent readings. Learn why the IBTS is the sensor you should be relying on.3. Pressure Sensor (FlowSense)Available on the R2 and R2 Pro models, FlowSense ensures a perfectly steady airflow by automatically compensating for chaff buildup. This makes your roast profiles more repeatable and reliable than ever.------------------------------------------------------MASTER THE AILLIO BULLETWant to master every function, technical detail, and maintenance step of your Aillio Bullet? Check out the full, 4.5-hour Aillio Bullet Masterclass here4.5 HOUR MASTERCLASS FOR FREEIf you get an Aillio Bullet coffee roaster from Roast Rebels, you will get a free access to the Aillio Bullet masterclass: https://roastrebels.com/en/aillio-bullet-r2-pro/

In this exclusive interview, we sit down with Mikaël Portannier, the current World Coffee Roasting Champion, to discuss his incredible journey. From his beginnings in catering school to competing in his first student championship, Mikaël shares the key moments that ignited his passion for coffee.Discover how a simple contest led him down a path of continuous learning, transforming him from a barista to a world-class roaster. Mikaël reveals the importance of daily cupping for quality control and the motivation behind his competitive spirit.Learn about the intense preparation that goes into a world championship, the challenges of working with unfamiliar machines, and the crucial role of his team. This is a must-watch for anyone passionate about coffee, roasting, and the pursuit of excellence.Mikaël on Instagram: https://www.instagram.com/mikae__lParcel Coffee: https://parcelcoffee.fr/Roast Rebels: https://roastrebels.com/Chapters:00:00 - Introduction to Mikaël Portannier, the World Champion00:50 - How Mikaël's coffee journey began03:06 - Competing in "Coffee and Good Spirits"05:00 - The importance of cupping for a roaster05:39 - First experiences in roasting competitions09:12 - Transition from barista to professional roaster11:19 - What motivates him to compete13:24 - Preparing for the World Championship16:31 - The coffees used in the competition17:03 - The team behind the champion17:49 - Overcoming challenges with competition machines37:27 - Where to find Mikaël online▬ About the ROEST Sample Roaster ▬▬▬▬▬▬▬▬▬▬The ROEST L100 Ultra is a highly advanced sample roaster designed for the needs of coffee roasters, importers, and competition participants. It operates with a convection-based roasting system, ensuring even heat distribution. With a capacity of 50 to 200 grams per batch, it is ideal for precise evaluation of green coffee. Its advanced sensor technology provides real-time data on temperature, airflow, and bean movement, allowing for precise control of the roasting profile.A key feature of the ROEST L100 Ultra is its automated roast profile management with adaptive algorithms. The machine detects the first crack automatically and adjusts the roast development accordingly to ensure consistent results. In addition to fully automated roasting, it also offers manual control for customization. With its integrated cloud-based software, users can store, analyze, and optimize roast profiles. The ROEST L100 Ultra is particularly suited for professional applications where consistency and efficiency are essential.ROEST coffee roasters with free shipping within Europe: https://roastrebels.com/en/roest▬ About this channel ▬▬▬▬▬▬▬▬▬▬▬▬At Roast Rebels, our mission is to make coffee roasting easy. On the one hand we offer the most proven small scale roasting machines and high quality green coffees, on the other hand we want to support people who roast coffee with tips, knowledge, roasting profiles and tutorials to achieve good roasting results quickly. You'll find lots of information and roasting profiles on our website, as well as here on the YouTube channel. #homeroasting #coffeeroasting▬ More Information ▬▬▬▬▬▬▬▬▬▬▬▬You will find a lot more information as well on our website: https://roastrebels.com/en▬ More Videos ▬▬▬▬▬▬▬▬▬▬▬▬More home roasting knowledge: https://www.youtube.com/@UC5xchx_vufvEIgRXgiXCjwQ Mehr Heimrösterwissen auf Deutsch: https://www.youtube.com/@UClk5nH5ijBrbyL5TBkomWSQ ▬ Social Media ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬►Facebook: https://www.facebook.com/roastrebels/►Instagram: https://www.instagram.com/roastrebels/►Newsletter: https://eepurl.com/dxHgML►Podcast (Roasting coffee - made easy): https://anchor.fm/roasting-coffee►Onlineshop for coffee roasters: https://roastrebels.com/en⁠

Win on purpose!

In this advanced session with Sam Corra and Jerome Rosler from Nucleus Coffee Tools, we break down how to design, validate, and execute competition‑ready roast profiles. Built for professional baristas, roasters, and coaches, this webinar connects green coffee physics, sensory goals, and stage workflow into a repeatable system you can trust on the world stage.You’ll learn how to translate sensory intent into curves, adapt profiles for espresso/filter/milk‑based service, control Maillard and development under time pressure, and leverage the Nucleus LINK Sample Roaster for precision and repeatability. If you’re targeting competitons like Barista Championships or Brewers Cup, this session gives you the frameworks and checkpoints to move from “good” to medal‑ready.👉 Nucleus Coffee Tools:👉 Roast Rebels — EU distribution of Nucleus Coffee Tools👉 Nucleus LINK Sample Roaster👉 Next webinars on Coffee RoastingChapter:0:00 Nucleus Coffee Tools and Coffee Competitions1:45 World Brewers Cup winning Profile3:10 Roasting Profile for Milk based Coffee5:28 Roasting Profile for Filter Coffee6:45 Martin Wölfl World Brewers Cup winning profile8:30 Roasting Profiles for Espresso9:50 Nucleus LINK Profiles in Development11:47 Eline Ferket's WBrC Profile14:50 Jason Bull's WBrC Profile18:31 Selecting Roasting Profiles for Cup Scores21:52 Get Roasting Profile Support from Nucleus Coffee Tools▬ About the Nucleus Link sample roaster ▬▬▬ The Nucleus Link is a highly accurate convection roaster. It has been specifically designed as a sample roaster - in particular, it allows the same roast to be produced regardless of external conditions. This makes it perfect for communication between coffee growers, traders and roasters, and as a sample roaster for farm visits.The unit comes in a shockproof box and with accessories to determine the density of the beans. It also comes with an app that selects the appropriate settings for the machine based on the altitude, type and density of the beans. Thanks to its ease of use, the machine is also suitable for ambitious and quality-conscious home roasters.You can find more about the roaster here: https://roastrebels.com/en/nucleus-link/▬ About this channel ▬▬▬▬▬▬▬▬▬▬▬▬At Roast Rebels, our mission is to make coffee roasting easy. On the one hand we offer the most proven small scale roasting machines and high quality green coffees, on the other hand we want to support people who roast coffee with tips, knowledge, roasting profiles and tutorials to achieve good roasting results quickly. You'll find lots of information and roasting profiles on our website, as well as here on the YouTube channel. #homeroasting #coffeeroasting▬ More Information ▬▬▬▬▬▬▬▬▬▬▬▬You will find a lot more information as well on our website: https://roastrebels.com/en▬ Social Media ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬►Facebook►Instagram►YouTube Channel on Coffee Roasting►Newsletter►Onlineshop for coffee roasters

The Recipes feature in RoasTime is one of the most powerful tools for Aillio Bullet users – but many roasters don’t use it to its full potential.In this video, I show you step by step:🔥 What Recipes in RoasTime actually are🔥 How to create, save and customize your own Recipes🔥 How to run a roast fully automated – or semi-manual🔥 And how Recipes help you roast more consistently, more efficiently, and with less stressThis video is a small extract from the full Aillio Bullet Masterclass – a 4.5+ hour course full of knowledge, tools and hands-on tips for the Bullet and for roasting in general.If you like this video, the full course will take your roasting to a whole new level.I’m Ingo from Roast Rebels and I support passionate roasters with the tools and insights they really need.👉 Watch now – and check out the full masterclass at: https://academy.roastrebels.com👉 More info on the Aillio Bullet: https://roastrebels.com/en/aillioChapter: 00:00 – Intro: What are Recipes in RoasTime?00:30 – Creating your first Recipe01:15 – Saving and editing Recipes02:05 – Manual vs. automatic roasting with Recipes03:00 – Why Recipes help you roast more consistently04:00 – Summary: Using Recipes to simplify your workflow👉 More info on the Aillio Bullet Masterclass: https://youtu.be/XSNO6FjAyPo▬ About the Aillio Bullet Roaster ▬▬▬▬▬▬▬▬▬▬The Aillio Bullet roasters are state-of-the-art, powerful yet compact coffee roasters with a capacity of 1kg or 1.2kg.Unlike traditional electric roasters, the Bullet roasters use induction to directly heat the drum. This induction heating allows for rapid and precise adjustments in heating power, as well as efficient heat transfer for fast and energy-efficient roasting.Another unique feature is the infrared sensor that allows the Aillio Bullets to measure the bean temperature without contact. This quick and precise measurement supports the development and execution of highly accurate roast profiles.With the Bullet, you can easily and finely adjust the heat transfer, airflow, and drum speed.The roaster is compatible with both Artisan and Aillio’s own user-friendly software, RoasTime, which allows for easy sharing of roast profiles with other users.For more information on the Aillio Bullet, visit: https://roastrebels.com/en/aillio▬ About this channel ▬▬▬▬▬▬▬▬▬▬▬▬At Roast Rebels, our mission is to make coffee roasting easy. On the one hand we offer the most proven small scale roasting machines and high quality green coffees, on the other hand we want to support people who roast coffee with tips, knowledge, roasting profiles and tutorials to achieve good roasting results quickly. You'll find lots of information and roasting profiles on our website, as well as here on the YouTube channel. #homeroasting #coffeeroasting▬ More Information ▬▬▬▬▬▬▬▬▬▬▬▬You will find a lot more information as well on our website: https://roastrebels.com/en

Sample roasting isn’t just about tasting coffee – it’s about making the right decisions for your production roasts.In this video, I show you how I roast samples on the ROEST L100 Plus, with a clear goal:Getting profile data you can actually use – whether you’re buying green coffee, checking quality, or preparing for production.You’ll learn:

• How I evaluate green coffee for my assortment
• What I look for in roast curves and development
• How the ROEST helps build consistent, translatable profiles
• And how I make the most of just 100g of green coffee

I’m Ingo from Roast Rebels and I help roasters get better results, with the right tools and the right approach.More about the ROEST L100 PlusChapter00:00 – Intro: Why sample roasting is so important00:28 – Different use cases for sample roasts01:18 – Evaluating green coffee: what I look for02:10 – ROEST L100 Plus setup for sample roasting03:15 – Tips for consistent results with 100g batches04:30 – Summary: How to make smarter buying decisions▬ About the ROEST Sample Roaster ▬▬▬▬▬▬▬▬▬▬The ROEST L100 Plus is a highly advanced sample roaster designed for the needs of coffee roasters, importers, and competition participants. It operates with a convection-based roasting system, ensuring even heat distribution. With a capacity of 50 to 200 grams per batch, it is ideal for precise evaluation of green coffee. Its advanced sensor technology provides real-time data on temperature, airflow, and bean movement, allowing for precise control of the roasting profile.A key feature of the ROEST L100 Plus is its automated roast profile management with adaptive algorithms. The machine detects the first crack automatically and adjusts the roast development accordingly to ensure consistent results. In addition to fully automated roasting, it also offers manual control for customization. With its integrated cloud-based software, users can store, analyze, and optimize roast profiles. The ROEST L100 Plus is particularly suited for professional applications where consistency and efficiency are essential.More info on the ROEST Sample roaster

In this exclusive webinar, we’re joined by Jamison Savage (Finca Deborah, Panama) and Sam Corra (Nucleus Coffee Tools) to dive deep into the world of competition-level coffee production and roasting.

Learn how the winning coffees Nirvana, Elipse and Terroir dominated the World Barista Championships, and get expert insights into processing, fermentation, drying methods, and roasting techniques using the Nucleus Link.

Whether you’re a barista competitor, coffee producer or roaster, this session is packed with real-world knowledge, practical tips, and technical deep-dives straight from two of the industry’s top minds.

What you’ll learn:

✅ What makes Jamison Savage’s coffees so special

✅ How to collaborate with world-class baristas

✅ Why cascara and coffee byproducts are gaining attention

✅ How to roast for clarity, balance, and competition success

✅ Live profile adjustments on the Nucleus Link

✅ Q&A with real-life roasting and production challenges

👉 Savage Coffee

👉 Nucleus Coffee Tools

👉 Nucleus Link Roaster

Subscribe to newsletter for future webinars:

👉 English

👉 Deutsch

Chapters

00:00 Who is Jamison Savage and why are his coffees winning at the WBC?

03:00 How to produce coffee for world-class competitions

10:00 Sustainable use of byproducts: cascara, compost & health benefits

16:00 How producers collaborate with World Barista Champions

22:00 Darkroom drying and advanced drying techniques

28:00 How to roast competition coffee – tips from Sam Corra

Q&A

52:00 How to dry competition coffees correctly – darkroom drying explained

57:30 Ideal charge temperature for competition coffees

1:02:00 Pressure buildup during roasting and its impact on flavor

1:07:30 How to roast darker without baking the coffee

1:13:00 Should you split the 100g sample or roast it whole?

▬ About the Nucleus Link sample roaster ▬▬▬

The Nucleus Link is a highly accurate convection roaster. It has been specifically designed as a sample roaster - in particular, it allows the same roast to be produced regardless of external conditions. This makes it perfect for communication between coffee growers, traders and roasters, and as a sample roaster for farm visits.

The unit comes in a shockproof box and with accessories to determine the density of the beans. It also comes with an app that selects the appropriate settings for the machine based on the altitude, type and density of the beans.

Thanks to its ease of use, the machine is also suitable for ambitious and quality-conscious home roasters.

You can find more about the roaster here:

Or, if you come from Switzerland here

A sample roaster is the second most important tool in a coffee roastery – but how do you choose the right one? In this video, we dive deep into sample roasting: What is it, why does it matter, and which machines stand out? We explore the key functions that improve your roasting and compare popular models like the classic barrell roasters, Kaffelogic Nano 7, Nucleus Link, ROEST Sample Roaster or the Aillio Bullet.🔎

Machines featured in this video:

✅ Kaffelogic Nano 7 – Compact electric sample roaster with fine-tuned controls

✅ Nucleus Link – more than 900 profiles for spot-on roasting

✅ ROEST Sample Roaster – Fully automated, precision-controlled roasting

✅ Aillio Bullet – Induction heating for flexible roasting options📌

Chapters:

00:00 – Introduction: Why sample roasting is crucial

01:30 – The two main goals of sample roasting

04:00 – What makes a good sample roaster?

05:19 – Developing profiles for production roasting

06:35 – What makes a good profile roaster?

07:55 – Barrel Roaster: Traditional drum roasting for hands-on control

09:08 – Kaffelogic Nano 7: Compact & precise digital control

10:44 – Nucleus LINK: more than 900 roasting profiles

14:07 – ROEST Sample Roaster: Fully automated precision roasting

15:32 – Aillio Bullet: Hybrid sample & small batch production

16:38 – More info: https://roastrebels.com/en/coffee-roaster/🔥

Want to take your sample roasting to the next level?Visit our website for more details: https://roastrebels.com/en/

What happens at barista championships? How do you prepare optimally for a competition? Why is the Nucleus Link so popular in coffee competitions? And what are the insider tips for home baristas & aspiring champions?

In this interview, I talk to Felix Hohlmann, co-founder of Kaffeemacher:innen, the current German Barista Champion, and third-place finisher in the German Roasting Championships. Felix has already won 11 medals in coffee championships across almost all disciplines and shares exciting insights into the world of coffee competitions.

🔗 More info:

Felix on Instagram:

Kaffeemacher:innen on YouTube

Nucleus LINK Sample Roaster

Chapter:

0:00 about Felix Hohlmann

1:19 about Kaffeemacher:innen

3:26 benefits of coffee championships

6:18 what's important at barista championships

8:04 what coffees for barista championships

9:51 why is Nucleus LINK so popular for coffee championships

10:55 collaboration with Sasa Sestic and the Nucleus Coffee Tools team

11:57 vibrating espresso for better flavour

14:50 tips for home baristas

15:50 tips for coffee competitors

18:02 more information

▬ About the Nucleus Link sample roaster ▬▬▬

The Nucleus Link is a highly accurate convection roaster. It has been specifically designed as a sample roaster - in particular, it allows the same roast to be produced regardless of external conditions. This makes it perfect for communication between coffee growers, traders and roasters, and as a sample roaster for farm visits.The unit comes in a shockproof box and with accessories to determine the density of the beans. It also comes with an app that selects the appropriate settings for the machine based on the altitude, type and density of the beans. Thanks to its ease of use, the machine is also suitable for ambitious and quality-conscious home roasters.You can find more about the roaster here: ⁠https://roastrebels.com/en/coffee-roaster/nucleus-link⁠

Or, if you come from Switzerland here: ⁠https://roastrebels.ch/en/roaster/nucleus-link