Roast with confidence
We’ve engineered Kelvin to roast and bring out the best quality from any raw coffee beans, using a vortex-drive bottom-up air roasting technique that will lead to a more even roast—so your cup is delicious no matter how you brew.
Roast for a pot, or just a cup
The ideal batch size for Kelvin is 100-120g of green coffee beans—enough to brew about 4-6 cups of coffee—so you can roast just enough for your morning pour over or for a whole pot. This flexibility enables you to make fresh coffee for any occasion, and all in under 10 minutes.
Set the roasting time by simply turning the control knob, push to start, and Kelvin does the rest. You can also add or remove time mid-roast, to make it easier to personalize your flavor. Combine different beans from around the world with varying roasting times, and the flavor possibilities are endless.
When the roasting cycle is finished, Kelvin automatically cools the beans to ensure they’re ready to store or grind.
Collecting chaff is no hassle with Kelvin’s built in filter. It easily slips into the roasting chamber, capturing chaff efficiently and in one place. Bonus—you can even compost chaff for an eco-friendly cleanup.
Cool under pressure
We've developed a double-walled housing that keeps the exterior glass cool while the beans are roasting. The 360 degree view of the glass roasting chamber allows you to keep an eye on your roast to make it perfectly to your taste, while the process unfolds right in front of you.