i-ROAST 2: A Compact Home Coffee Roaster for Specialty Roasters

If you’ve ever wanted to roast your own coffee at home but felt overwhelmed by bulky machines, confusing controls, or long roast cycles, there’s a compact solution that’s been popular among home roasters for years. The key is finding a machine that’s small but capable — one that gives you real control without requiring a dedicated roasting space or advanced degree in thermodynamics.

The i-ROAST 2 is a 150g-capacity hot-air home coffee roaster that completes a full roast and cool cycle in under 18 minutes. It offers preset programs, manual control, digital timing, and an all-in-one design for easy observation and cleaning.

What Is the i-ROAST 2?

The i-ROAST 2 is a hot-air (fluid-bed) style home coffee roaster manufactured by i-Roast. It has a compact form factor, measuring just 9 × 9 × 32 cm, and weighs 2.7 kg. Designed for home use, it roasts up to 150g of green coffee beans per batch and plugs into a standard 230V outlet with a power draw of 1500W.

Key Features and Design

The i-ROAST 2 is built for simplicity and visibility. Its sleek, streamlined body is both functional and aesthetically pleasing. Key features include:

• Fully automatic roast and cool cycle control
• Digital display showing roast and cooling time
• Two pre-programmed roast profiles and one customizable setting
• Transparent glass chamber for visual monitoring of bean color development
• Instant roast-to-cool button for manual control
• Total roast and cool time under 18 minutes
• Top-mounted chaff collector for easy cleanup
• Observation-friendly design for tracking First Crack and color changes

It’s aimed at coffee enthusiasts who want to experiment with different roast levels — from light to medium-dark — and develop personal profiles for various origins.

How a Sample Roast Works: Mandheling Example

In a real-world test using the i-ROAST 2, a home roaster used 120g of Mandheling green coffee beans (the machine accommodates up to 150g). Here’s how the process unfolded:

• Beans before roasting: 120g, selected by hand to remove defects. The beans were large and even, with some slight fading due to age.
• Roast settings: No custom programming was used — the user relied on the machine’s default stored profile by pressing the ROAST button.
• Roast stages observed: Initial moisture evaporation (steam phase), followed by chaff shedding and visible color progression from light brown to deep cinnamon.
• End point: Roaster stopped the batch when the beans reached a medium-dark stage with slight surface oil, based on visual judgment.
• Roast time: 12 minutes actual roast time
• Cooling: Automatic 3-minute cooling cycle; user supplemented with a fan to reduce remaining heat
• Beans after roasting: 100g, for a total weight loss of 16.6%
• Chaff: Collected in the top-mounted chaff tray for easy disposal

The entire process — from loading beans to finished, cooled roast — took under 18 minutes. The user reported no issues with bean loss during cooling or excessive mess thanks to the chaff collector.

Why Choose the i-ROAST 2 for Home Roasting?

The i-ROAST 2 is favored by home coffee roasters for several reasons:

• Its small batch size (150g) is practical for daily or weekly use without producing excess waste or requiring large storage.
• The automatic roast and cool cycle makes it approachable for beginners, while manual override and digital timing offer room to grow.
• Hot-air roasting provides even heat distribution, reducing the risk of scorching or uneven development.
• The transparent drum allows you to observe key roast milestones like the start of First Crack or color shifts.
• Quick roast cycles let you experiment frequently — ideal for dialing in your preferred flavor profiles.

Frequently Asked Questions

What batch size can the i-ROAST 2 handle?

The i-ROAST 2 can roast up to 150g of green coffee beans per batch. In the example provided, 120g were used, and the machine easily handled that amount with room to spare.

How long does a full roast and cool cycle take?

The total process — from the start of roasting to the end of the cooling cycle — takes under 18 minutes. In the Mandheling test, the actual roast time was 12 minutes, followed by a 3-minute automated cool down.

Does the i-ROAST 2 have programmable roast profiles?

Yes, it includes two pre-set roast programs and one customizable program, allowing users to save their preferred roast profiles for different beans or flavor goals.

Is the i-ROAST 2 easy to clean?

Yes. It features a top-mounted chaff collector for easy removal of husks, and the transparent glass roasting chamber allows for quick visual inspection and minimal mess during operation.

What kind of coffee beans can you roast in the i-ROAST 2?

You can roast any green coffee bean origin or process type — including single-origin beans, blends, natural, washed, or honey-processed coffees. Users have successfully roasted everything from light to medium-dark profiles.

Is the i-ROAST 2 suitable for beginners?

Yes. Its automatic controls make it beginner-friendly, while the ability to manually start cooling and use digital timing offers room for learning and experimentation as skills develop.

Recommended FrontStreet Coffee for Home Roasting

Try FrontStreet Coffee’s Ethiopia Humbera for bright, fruity profiles that shine when roasted lightly to medium on the i-ROAST 2. For something deeper, their PWN Golden Mandheling offers classic Mandheling body and spice when taken to a medium-dark level. Both beans respond well to the even heat of hot-air roasting, letting you practice developing sweetness and acidity. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.