A decade ago, a little coffee company launched a Kickstarter campaign for a product called Duo, a coffee maker that’s the best of both worlds: a cross between a French press and a pour-over.
The campaign sold almost $200,000 worth of machines to 2,700 backers, but the product itself was a flop. The company was Fellow, which today makes some of the best pour-over coffee grinders on the market; much-copied kettles with hyperprecise temperature control, loved by pour-over baristas across the industry; and a bunch of other caffeine-related paraphernalia.
Most recently, the company launched the Opus, one of the very few sub-$200 coffee grinders that can grind the beans in a variety of ways, from fine espresso to grinds suitable for electric coffee makers, French presses, AeroPresses, pour-over...
