The Truth About Home Coffee Roasting: A Critical Look at Kickstarter Launches
Hello, coffee lovers. I am Pak Kopi, and today we are diving into another episode of “Coffee Truth.” Things are heating up in the home coffee roasting field, and the news is extremely exciting. My partner and I, Raymond Lai from Singapore, recently launched a Kickstarter campaign called “Coffee Roasting in Your Kitchen with the Power Roaster.”
After working on the Power Roaster for several years, we produced a functional prototype that works fantastic and looks good. We launched our campaign about two weeks ago and saw great initial momentum; however, the funding pace slowed slightly after the first two days. During this time, we received numerous requests for a continuous roasting video to demonstrate our product. Once we provided this, some skepticism remained because such products had not previously appeared on the market.
Shortly after our launch, another competitor entered the scene: the Kelvin, also a home roaster launched on Kickstarter. Unlike our engineering-focused approach, the Kelvin is a product of a design firm that has won numerous awards. Their campaign was a massive success, fully funding in just three hours. Within a couple of days, they had raised five times more than we had in two weeks and were on their way to $200,000, with some speculating they could reach $3 million. This success was driven by a slick marketing campaign, pre-orders to create viral momentum, and a roster of online bloggers lined up to review the product immediately upon launch.
The Discrepancy: Power Roaster vs. The Kelvin
While our team in Singapore conducted live demonstrations proving our machine works, I examined the Kelvin’s marketing videos closely. To me, the roasting action in their videos did not appear to be genuine roasting; rather, it looked like fan action mimicking the movement of the SR500 home roasting machine. The motor and fan assembly appeared identical, causing the beans to move in a way that suggests they are not actually being roasted evenly.
Furthermore, the Kelvin’s design appears to be a contemporary, 3D-printed style appliance. Their marketing highlights an app feature that allows users to choose how much coffee to roast—ranging from a single cup (approx. 20 grams) to a full pot (up to 100 grams)—and to dial in the roast time.
The Physics of Roasting: Why You Can’t Just “Dial It In”
This is where “Coffee Truth” comes into play. Through years of research and trial and error, we have discovered that roasting is not as flexible as the app suggests.
To achieve a proper roast, specific parameters must be met:
- Weight: Our machine is calibrated to roast 120 grams (approx. a quarter pound).
- Time: The roast takes approximately six minutes (or slightly less, depending on the bean).
It is physically impossible to roast significantly less coffee, such as 60 or 20 grams, in a standard home roaster using the same air flow and heat dynamics. If you reduce the weight of coffee in the chamber, the beans do not get hot enough, and the roast time extends drastically. Conversely, if you overload the chamber with too much coffee, the airflow becomes insufficient to ensure an even roast, resulting in a very uneven, “bird’s nest” style roast where some beans are under-roasted and others are over-roasted.
The Necessity of Fixed Variables
Roasting profiles are highly specific. You must use the same weight of coffee within the same time frame to achieve consistency. If you attempt to change the weight or the time, the result will vary wildly because the machine cannot adjust to those different parameters automatically.
This is why our Power Roaster is designed with a simple on/off switch. There are no variable controls to fiddle with. You put exactly 120 grams into the chamber, turn the machine on, wait 5 to 6 minutes, inspect the roast, and turn it off. There are no variables to play with. If there are too many variables, the result will be different every time, making it impossible to dial in the exact flavor profile you desire.
Conclusion
No matter how slick the marketing campaign is, or how beautiful the machine looks, the physics of roasting cannot be ignored. You cannot simply roast 20 grams in a different timeframe and expect a quality result from a fixed-airflow machine. The Kelvin may look great and have a compelling app, but the fundamental mechanics of roasting require precision regarding weight and time.
We want to make people aware of these realities before they invest in a Kickstarter campaign. If you are looking for a home roaster, understand that you must be very specific about the amount you roast and the timeframe you allow.
That is the truth of coffee. Thank you for watching, and I’ll see you next time.
