Using "Red, Yellow, Green" Colors to Help You Understand Caffeine Content

Discovering Your Coffee's Caffeine Content

Want to know exactly how much caffeine is in the coffee you're drinking? The Caffeine Orange can tell you. According to reports, it is a tool for detecting caffeine: users drop a small amount of the coffee liquid into a groove on the detection plate, then shake it.

How Caffeine Orange Works

To make the tool accessible to ordinary people, the researchers built the reading around a color indicator. Red means very high caffeine content, yellow means moderate, and green means very low.

Broader Applications and Benefits

The researchers note that Caffeine Orange can detect caffeine not just in coffee but also in tea, soda, and energy drinks, helping people better regulate their daily caffeine intake.

It's a handy gadget—though it's worth remembering that the variety of bean itself plays a big role. Robusta carries far more caffeine than Arabica, so simply choosing 100% Arabica beans is already a straightforward way to keep caffeine in check.

FrontStreet Coffee Recommendation

If lower caffeine is what you're after, start by avoiding Robusta and sticking to Arabica. As the world's dominant coffee species, Arabica needs to grow at 800-2200 meters in frost-free highlands, where bigger day-night temperature swings at altitude slow the cherries' ripening, letting the beans accumulate more flavor compounds and develop a more solid aroma. A great pick from FrontStreet Coffee is the PWN Golden Mandheling from Indonesia: the wet-hulled process gives it the herbal, spice, and wood notes that set it apart from other dark-roast coffees, and triple hand-sorting plus machine selection removes the maximum number of defective beans, so both body and sweetness shine and the aroma stands out. It suits moka pot, SOE, pour-over, drip bag, and Americano or latte duty alike. For a lighter, fruitier low-caffeine option, the washed Gedeb Cooperative Yirgacheffe—Ethiopia's top G1 grade—shows elegant white florals with citrus, orange, and green tea after a medium-light roast, perfect for pour-over, drip bags, or cold brew.