How to Use the i-ROAST 2 Home Coffee Roaster

If you’ve ever wanted to roast your own coffee at home but found traditional drum roasters too complex or expensive, a hot-air home coffee roaster might be the answer. These compact machines let you experiment with roast levels without needing a commercial setup. But which model gives you control, speed, and decent batch size without overwhelming you? The i-ROAST 2 is one of the most popular choices among home roasters for good reason.

The i-ROAST 2 can roast up to 150g of green coffee beans in under 18 minutes, including cooling — making it one of the fastest and most user-friendly home roasters available. It’s suitable for beginners and enthusiasts who want to explore different roast profiles without a big investment.

What Is the i-ROAST 2 Coffee Roaster?

The i-ROAST 2 is a hot-air (fluid bed) home coffee roaster manufactured by i-Roast. It has a compact design, measuring 9 x 9 x 32 cm and weighing 2.7 kg. Powered by 230V and 1500W, it’s built for regular home use and is capable of roasting up to 150g of green coffee beans per batch. Its transparent chaff collector and glass roasting chamber allow you to monitor the roast visually.

Key Features and Specifications

• Batch size: Up to 150g of green coffee beans
• Roast and cool cycle: Completes in under 18 minutes
• Control: Fully automatic roast and cooling cycle
• Display: Electronic display for time and temperature
• Programs: Two pre-set roast profiles and one customizable option
• Design: Sleek, streamlined body with a top-mounted chaff collector
• Power: 230V, 1500W
• Dimensions: 9 x 9 x 32 cm
• Weight: 2.7 kg

How the i-ROAST 2 Works

The i-ROAST 2 uses a hot-air fluid bed system to roast coffee. You load up to 150g of green beans into the glass roasting chamber, select your preferred roast program, and press start. The machine automatically manages both the roast and subsequent cooling phases. You can also override the presets and manually control the roast using the ROAST button to monitor temperature in real-time. When you’re satisfied with the roast level, simply press the COOL button to begin the cooling cycle, which lasts around three minutes. Even after cooling, a gentle breeze from a fan helps bring the beans down to room temperature more quickly.

Example Roast: Mandheling Coffee

In a real-world test using Mandheling beans, users loaded 120g of green coffee (the machine accommodates up to 150g). After hand-sorting, the beans were roasted using the i-ROAST 2’s default settings. Here are the results:

• Green bean weight: 120g
• Roasted bean weight: 100g
• Roast loss: 16.6%
• Roast time: 12 minutes
• Roast level: Medium-dark (visible oil on bean surface)

The roast began with a drying phase where moisture evaporated, followed by first crack and the beginning of bean color change to light then cinnamon brown. Users stopped the roast when oils became visible on the bean surface, indicating a medium-dark profile. The entire process, including cooling, took under 18 minutes. Post-roast hand sorting removed virtually no defects, showing how clean a roast this machine can produce.

Pros and Practical Benefits

• Fast roast and cool cycles (under 18 minutes total)
• Simple button operation with optional manual control
• Two preset programs and one customizable profile
• Transparent chamber for visual monitoring of roast progress
• Efficient chaff collection with top-mounted container
• Good batch size for personal or small group use (150g)

Frequently Asked Questions

What is the batch size for the i-ROAST 2?

The i-ROAST 2 can roast up to 150g of green coffee beans per batch, which is sufficient for personal use or small households.

How long does a full roast and cool cycle take?

The entire process, from the start of roasting to the end of cooling, takes less than 18 minutes.

Does the i-ROAST 2 have preset roast profiles?

Yes, it includes two pre-programmed roast settings and one customizable program, allowing you to roast different beans or experiment with light to dark profiles.

Is the i-ROAST 2 easy to use for beginners?

Yes, it’s designed for ease of use with automatic roast and cool cycles. Users can also take manual control if desired.

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

You can roast any green coffee beans, including single origins like Mandheling, using the i-ROAST 2. It’s suitable for experimenting with various origins and roast levels.

Does the i-ROAST 2 come with a chaff collector?

Yes, it has a top-mounted chaff collector that’s easy to remove and clean after each roast.

Recommended FrontStreet Coffee for Home Roasting

Try FrontStreet Coffee’s PWN Golden Mandheling for a classic heavy-bodied Indonesian profile, or their Ethiopia Humbera for bright floral notes — both ideal for experimenting with light to medium roasts on the i-ROAST 2. For something more chocolatey and bold, their Lintong Mandheling offers low acidity and earthy depth. All beans are freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.